Hearty Sausage and Potato Casserole: Your Ultimate Comfort Food Guide
Discover the ultimate comfort food with this incredibly satisfying sausage and potato casserole. Bursting with robust, rustic flavors from savory Italian sausage, tender potatoes, colorful bell peppers, aromatic garlic, and gooey cheese, this dish is more than just a meal – it’s a warm hug in a baking dish. Perfect for chilly evenings or a cozy family dinner, this easy-to-follow recipe promises to become a beloved staple in your kitchen, delivering hearty goodness that truly warms your bones. Get ready to impress your family and friends with a casserole that’s both simple to prepare and packed with irresistible taste!

Why This Sausage and Potato Casserole Will Become Your New Favorite
This savory sausage and potato casserole recipe has been a treasured favorite since 2012, and for good reason! It consistently delivers on its promise: a truly hearty, comforting, and incredibly filling meal, all built upon a delightfully simple foundation. The magic lies in its perfect blend of wholesome ingredients including succulent Italian sausage, tender potatoes, vibrant bell peppers, sweet leeks, earthy mushrooms, ripe tomatoes, and fragrant garlic. Each component contributes to a symphony of flavors and textures, making every bite an absolute delight.
Imagine the beloved flavors of classic sausage and peppers, but elevated with the satisfying addition of creamy potatoes and a few extra gourmet touches. This isn’t just another casserole; it’s a versatile, family-friendly dish that you’ll want to prepare again and again. Its adaptability makes it incredibly easy to customize with whatever fresh vegetables you have on hand, transforming leftovers into a whole new experience. Whether you’re a seasoned chef or a beginner in the kitchen, this recipe is designed for success, providing maximum flavor with minimal fuss. It’s the perfect solution for busy weeknights when you need a delicious, wholesome meal without spending hours in front of the stove.

Essential Ingredients for Your Hearty Casserole
To create this magnificent sausage and potato casserole, you’ll need a selection of fresh and flavorful ingredients. While we’ll provide the full printable recipe with precise measurements at the end of this post, here’s a quick overview of what you’ll need to gather:
- Italian Sausage: 1 pound (bulk or 5 links, casings removed) – choose sweet, mild, or spicy based on preference.
- Mushrooms: 1 cup, minced – cremini or white button mushrooms work best.
- Fresh Italian Parsley: ¼ cup, minced (flat-leaf) – for vibrant color and fresh flavor.
- Chicken Broth: 1 ½ cups – the base of our savory sauce.
- Red Potatoes: 3 cups, cubed – waxy varieties hold their shape beautifully.
- Olive Oil: 3 Tablespoons, divided – for sautéing.
- Bell Peppers: 1 medium yellow and 1 medium red, cubed (about 1 cup each) – adds sweetness and color.
- Leek: 1, white part cleaned and sliced – for a subtle onion flavor.
- Garlic: 4 cloves, smashed and coarsely chopped – the backbone of flavor.
- Diced Fire Roasted Tomatoes: 14 ounces, drained – for a smoky, rich tomato base.
- Kosher Salt and Freshly Ground Pepper: To taste – essential seasoning.
- Shredded Cheese: ¾ cup (garlic cheese or mozzarella) – for a decadent, cheesy topping.

Ingredient Spotlight & Easy Swaps
Understanding your ingredients and knowing when to substitute can elevate your cooking game. Here’s a deeper dive into the components of this casserole:
SAUSAGE: We highly recommend sweet Italian sausage for its balanced flavor, but this recipe is incredibly flexible. Feel free to use any variety of uncooked Italian sausage that suits your palate. For those who enjoy a little heat, spicy Italian sausage will add a fantastic kick! Alternatively, a combination of mild and hot sausage can provide a subtle warmth without overpowering the dish. If you’re looking for lighter alternatives, chicken or turkey Italian sausage are excellent choices that still offer that distinct Italian flavor profile. Always remember to remove the casings if you’re using links rather than bulk sausage.
PEPPERS: Bell peppers not only add a burst of color but also a wonderful sweetness. While we typically opt for red, yellow, and orange bell peppers due to their sweeter notes, green bell peppers work beautifully too and can offer a slightly more savory, earthy flavor. Don’t hesitate to mix and match colors for a visually appealing dish. For an extra layer of flavor and a touch of heat, consider adding a small amount of poblano or jalapeño pepper, finely diced.
POTATOES: Red potatoes are our go-to for this casserole because their waxy texture helps them maintain their shape and prevents them from becoming mushy during baking. Other waxy varieties like Yukon Gold or fingerling potatoes would also be excellent choices. If russet potatoes are all you have, they can certainly be used, but be aware they are starchier and may result in a slightly softer texture. For a healthier twist, sweet potatoes can be a delicious alternative, adding a different kind of sweetness and a boost of nutrients.
ADDITIONS: The beauty of a casserole lies in its versatility. If leeks or mushrooms aren’t your favorites, or if you simply want to expand the vegetable medley, feel free to omit them or swap them out. Carrots, celery, zucchini, or even spinach (added at the end to wilt) would make fantastic additions, boosting both nutrition and flavor. This is your chance to clean out the crisper drawer and get creative!
TOMATOES: Diced fire-roasted tomatoes are a secret weapon in this recipe, imparting a depth of smoky flavor that truly elevates the casserole. If you can’t find them, regular diced tomatoes are a perfectly acceptable substitute. Just remember, it’s crucial to drain your can of tomatoes thoroughly before adding them to the casserole. This step helps prevent excess liquid, ensuring your casserole achieves that perfect hearty, rather than watery, consistency. For a fresher taste, you can also use ripe, fresh tomatoes, but be prepared to adjust the cooking time slightly and ensure they are well-drained as well.
Crafting Your Delicious Sausage and Potato Casserole
These step-by-step photos and detailed instructions are here to guide you through the process of making this incredibly comforting casserole. For a printable version of this recipe, complete with precise measurements and nutritional information, simply Jump to Recipe at the bottom of this page.
- Prepare the Oven: Begin by preheating your oven to 350°F (175°C) to ensure it’s ready for baking. This allows the casserole to cook evenly from the start.
- Brown the Sausage: In a large mixing bowl, combine the Italian sausage with the minced mushrooms until they are well incorporated. Transfer this mixture to a large skillet and brown it over medium heat. Cook until the sausage is nicely browned and cooked through, breaking it up with a spoon as it cooks. Once browned, drain any excess grease from the skillet and set the sausage mixture aside. Wipe out the skillet, preparing it for the next steps.

- Prepare the Broth Mixture: In a separate small bowl, combine the minced fresh Italian parsley with the chicken broth. Stir well and set this flavorful mixture aside. This will infuse the casserole with herbaceous notes.

- Sauté Potatoes and Peppers: Return the cleaned skillet to medium heat. Add 2 tablespoons of the olive oil. Once hot, add the cubed red potatoes and cook for approximately 6-8 minutes, stirring occasionally, until they develop a beautiful light brown crust. Next, add the yellow and red bell peppers to the skillet and continue to sauté for another 2-3 minutes, just until the peppers are tender-crisp. Remove the potato and pepper mixture from the skillet and set it aside with the sausage.

- Cook Leeks and Garlic: Add the remaining 1 tablespoon of olive oil to the same skillet. Sauté the sliced leeks over medium heat until they become tender, which should take about 2-3 minutes, stirring frequently to ensure even cooking. Then, add the coarsely chopped garlic and continue to sauté for another minute or so, until fragrant. Be careful not to burn the garlic.

- Add Tomatoes and Simmer: Add the thoroughly drained diced fire-roasted tomatoes to the skillet with the leeks and garlic. Stir all the ingredients together, ensuring they are well combined and coated.
- Combine and Season: Pour the chicken broth and parsley mixture into the skillet. Bring the liquid to a gentle boil, allowing the flavors to meld. Season generously with freshly ground black pepper and a couple of pinches of Kosher salt, adjusting to your taste preference.
- Assemble and Bake: In a 2-quart casserole dish, combine the browned sausage and mushroom mixture, the sautéed potatoes and peppers, and the seasoned tomato and leek mixture from the skillet. Stir everything gently to distribute all the wonderful ingredients evenly. Cover the casserole dish tightly with aluminum foil and bake in your preheated oven for 45 minutes. After 45 minutes, carefully remove the foil, sprinkle the shredded garlic cheese (or mozzarella) evenly over the top, and return the casserole to the oven, uncovered, for another 10 minutes. Bake until the cheese is melted, bubbly, and lightly golden.


Frequently Asked Questions & Expert Tips
Absolutely! This is an incredibly adaptable casserole recipe. While Italian sausage lends a distinct flavor, you can certainly substitute it with ground beef, ground turkey, or even ground chicken. If using a different ground meat, you might want to add a pinch of Italian seasoning, fennel seeds, or a dash of red pepper flakes to mimic some of the traditional Italian sausage flavors. Ensure you brown and drain any ground meat thoroughly before adding it to the casserole to prevent excess grease.
Yes, fresh tomatoes can be a wonderful alternative for an even brighter, garden-fresh flavor! A 14-ounce can of diced tomatoes is roughly equivalent to 1 ¾ cups of fresh tomatoes. For best results, choose ripe, firm tomatoes like Roma or beefsteak. Dice them finely and, similar to canned tomatoes, I recommend seeding and lightly salting them, then letting them sit for a few minutes to drain any excess liquid before adding them to the skillet. This helps control the overall moisture content of the casserole.
Garlic cheese adds a delightful savory punch, but if it’s unavailable, classic mozzarella is a fantastic and reliable substitution, providing that perfect gooey texture. Other excellent cheese options include sharp cheddar for a bolder flavor, provolone for a mild, creamy melt, or even a blend of Italian cheeses like Parmesan and fontina for a more complex profile. Feel free to experiment with your favorite melting cheeses!
This casserole is designed to have a comforting, almost stew-like consistency, but it shouldn’t be overly watery. The most common culprit for excess liquid is undrained tomatoes. I strongly emphasize draining your diced tomatoes thoroughly before adding them. If you prefer an even thicker consistency, you can reduce the chicken broth to ¾ cup. Another tip is to ensure your sausage is well-drained after browning. If you notice it’s still too liquidy after baking, you can uncover it for the last 5-10 minutes of baking to allow some moisture to evaporate.
To store, allow the casserole to cool completely to room temperature. Then, transfer the leftovers to an airtight container and keep it in the refrigerator for up to 4 days. For reheating, you can warm individual portions in the microwave until heated through, usually 2-4 minutes depending on your microwave’s power. For larger portions or to retain a crisper topping, reheat the casserole in a 350°F (175°C) oven for about 15-20 minutes, or until thoroughly heated. If the top starts to brown too much, you can loosely cover it with foil.
Yes, this casserole is excellent for meal prep! You can assemble the entire casserole (up to the point of adding cheese and baking) a day in advance. Cover it tightly with foil and refrigerate. When ready to bake, let it sit at room temperature for about 30 minutes before baking, then proceed with the baking instructions, adding an extra 10-15 minutes to the initial covered baking time to ensure it heats through.
Yes, this casserole freezes well! After baking, allow it to cool completely. You can freeze the entire casserole in a freezer-safe dish, tightly wrapped with plastic wrap and then foil, or portion it into individual containers. It will keep for up to 2-3 months. To reheat, thaw overnight in the refrigerator, then bake at 350°F (175°C) until heated through and bubbly. If reheating from frozen, it will take longer; cover with foil and bake at 350°F for 60-90 minutes, then uncover and bake for an additional 10-15 minutes.

Perfect Pairings: What to Serve with Your Casserole
This hearty sausage and potato casserole is a complete meal on its own, but it truly shines when paired with a few simple accompaniments. For soaking up all the delicious juices, serve it alongside warm, crusty bread, fluffy rolls, or tender biscuits. The textural contrast and ability to scoop up every last bit of flavor are simply divine. To balance the richness of the casserole, a crisp, leafy green salad with a light vinaigrette is always a welcome addition. Consider adding some cucumber slices, cherry tomatoes, or a sprinkle of toasted nuts to your salad for extra crunch and freshness. For a more robust side, steamed green beans or roasted asparagus would complement the flavors beautifully. Enjoy this comforting meal in whatever combination you find most delightful!
Explore More Delicious Casserole Recipes
If you love the ease and comfort of casserole cooking, you’re in luck! Casseroles are the quintessential family-friendly meal, offering a complete dinner in one convenient dish. They are perfect for busy weeknights, potlucks, or simply when you’re craving something warm and satisfying. Dive into our collection of other fantastic casserole recipes that are sure to please everyone at your table:
- Classic Tater Tot Casserole
- Hearty Southwest Ground Beef Casserole
- Flavorful Stuffed Pepper Casserole
- Zesty Mexican Chicken Casserole
I absolutely love to bake and cook, and my greatest joy comes from sharing my kitchen experiences and delicious recipes with all of you! Remembering to come back each day for new culinary inspiration can be tough, which is why I offer a convenient newsletter delivered straight to your inbox every time a new recipe posts. Simply subscribe today and start receiving your free daily recipes – a constant source of deliciousness!
Sausage and Potato Casserole
IMPORTANT – There are often Frequently Asked Questions within the blog post that you may find helpful. Simply scroll back up to read them!
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8 servings
1 hour
15 minutes
328
Amanda Davis
Ingredients
- 1 pound Italian sausage bulk, or 5 links, casings removed
- 1 cup mushrooms minced
- ¼ cup fresh Italian parsley (flat leaf), minced
- 1 ½ cups chicken broth
- 3 cups cubed red potatoes
- 3 Tablespoons olive oil divided
- 1 medium yellow bell pepper cubed (about 1 cup)
- 1 medium red bell pepper cubed (about 1 cup)
- 1 leek white part cleaned and sliced
- 4 cloves garlic smashed and coarsely chopped
- 14 ounces diced fire roasted tomatoes drained
- Kosher salt and freshly ground pepper to taste
- ¾ cup shredded garlic cheese or mozzarella
Things You’ll Need
-
Large skillet
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2 quart baking dish
Before You Begin
- This is a very adaptable casserole recipe, so you certainly could use ground beef instead of Italian sausage. In fact, any ground meat will work.
- This casserole has almost a stew-type consistency. I highly recommend draining your tomatoes before beginning which will help with the excess liquid. If you prefer it to be even less liquidy, you can cut the broth down to 3/4 cup.
- We love the flavor of garlic cheese, but if you can’t find it, Mozzarella is a great substitution.
Instructions
-
Preheat oven to 350 F.
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Mix the sausage with the mushrooms until well combined. Brown sausage mixture in a skillet over medium heat until nicely browned. Drain and set aside. Wipe out skillet.1 pound Italian sausage,
1 cup mushrooms -
Add parsley to the chicken broth and set aside.1/4 cup fresh Italian parsley,
1 1/2 cups chicken broth -
Add 2 tablespoons of the olive oil to the skillet and heat over medium heat. Add the potatoes and cook, about 6-8 minutes, creating a nice light brown crust. Add the yellow and red bell peppers and continue to saute for 2-3 minutes, until peppers are tender crisp. Remove potato and pepper mixture from skillet and set aside.3 cups cubed red potatoes,
1 medium red bell pepper,
1 medium yellow bell pepper -
Add the remaining 1 tablespoon of olive oil to the skillet and saute the leeks until tender, about 2-3 minutes, stirring often. Add garlic and saute another minute or so.1 leek,
4 cloves garlic -
Add the drained tomatoes to the skillet and stir everything together.14 ounces diced fire roasted tomatoes
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Add broth and parsley mixture and bring to a gentle boil. Season with freshly ground pepper and a couple pinches of Kosher salt.
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Combine all ingredients except for the cheese and place in a 2 quart casserole dish. Cover with foil and bake for 45 minutes. Remove foil, sprinkle with shredded cheese and bake another 10 minutes.3/4 cup shredded garlic cheese
Expert Tips & FAQs
- Store cooled leftovers in an air-tight container kept in the refrigerator for up to 4 days. Reheat in a 350F oven for around 15 minutes or until heated through. You can reheat individual portions in the microwave.
Nutrition
Calories: 328cal |
Carbohydrates: 12g |
Protein: 13g |
Fat: 26g |
Saturated Fat: 9g |
Polyunsaturated Fat: 3g |
Monounsaturated Fat: 13g |
Cholesterol: 52mg |
Sodium: 730mg |
Potassium: 425mg |
Fiber: 2g |
Sugar: 3g |
Vitamin A: 1111IU |
Vitamin C: 55mg |
Calcium: 98mg |
Iron: 2mg
The recipes on this blog are tested with a conventional gas oven and gas stovetop. It’s important to note that some ovens, especially as they age, can cook and bake inconsistently. Using an inexpensive oven thermometer can assure you that your oven is truly heating to the proper temperature. If you use a toaster oven or countertop oven, please keep in mind that they may not distribute heat the same as a conventional full sized oven and you may need to adjust your cooking/baking times. In the case of recipes made with a pressure cooker, air fryer, slow cooker, or other appliance, a link to the appliances we use is listed within each respective recipe. For baking recipes where measurements are given by weight, please note that results may not be the same if cups are used instead, and we can’t guarantee success with that method.
This post originally appeared here on May 5, 2012 and has since been updated with new photos and expert tips.





