Italian Potato Casserole
A flavorful Italian-inspired potato casserole layered with sausage, vegetables, and cheese, perfect for hearty family dinners or gatherings with bold, savory flavors.
Ingredients
- 1 lb. bulk Italian sausage ⓘ
- 3 c. mashed potatoes ⓘ
- 1 c. chopped onion ⓘ
- 3/4 c. chopped green pepper ⓘ
- 2 garlic cloves, minced ⓘ
- 1 Tbsp. vegetable oil ⓘ
- 2 c. sliced fresh mushrooms ⓘ
- 2 c. chopped fresh tomatoes ⓘ
- 1 (2 1/4 oz.) can sliced ripe olives, drained ⓘ
- 1 tsp. dried basil ⓘ
- 1/4 tsp. salt ⓘ
- 1/8 tsp. pepper ⓘ
- 1/4 c. grated Parmesan cheese ⓘ
- 1 Tbsp. chopped fresh parsley or 2 tsp. dried parsley flakes ⓘ
Instructions
- In a skillet, cook sausage until no longer pink and drain.
- Place cooked sausage in a greased 9-inch square baking dish and top with mashed potatoes.
- In the same skillet, sauté onion, green pepper, and garlic in oil for 5 minutes or until vegetables are crisp-tender.
- Stir in mushrooms, chopped tomatoes, olives, basil, salt, and pepper.
- Spoon the vegetable mixture over the potatoes and sausage to within 1 inch of the edge of the dish.
- Sprinkle grated Parmesan cheese and chopped parsley on top.
- Bake uncovered at 350°F (175°C) for 30 to 35 minutes or until top is lightly browned.
Tips & Substitutions
For added depth of flavor, consider using Italian herbs or adding a splash of red wine to the vegetable mixture. If you prefer a lighter dish, you can substitute turkey sausage for the bulk Italian sausage. Feel free to incorporate other vegetables like zucchini or spinach for a more colorful casserole. This dish is versatile and can easily adapt to your favorite seasonal produce.
Serving Suggestions
This Italian Potato Casserole is hearty enough to stand alone, but it pairs beautifully with a fresh green salad or garlic bread for a complete meal. Consider serving it alongside a glass of red wine to enhance the flavors. For a lighter option, serve with steamed vegetables on the side. It also makes for a great potluck dish, as it can be prepared in advance and reheated.
Storage & Reheating
Store any leftovers in an airtight container in the refrigerator for up to three days. To reheat, place in an oven-safe dish and cover with foil to retain moisture. Bake at 350°F (175°C) for about 20 minutes, or until heated through. You can also microwave portions for a quicker option, but the oven will keep the texture best.
Nutrition & Diet Analysis (per serving)
Each serving of Italian Potato Casserole contains roughly 790 calories, with 40g protein, 112g carbohydrates, and 28g fat. It is an excellent source of vitamin C (253% of the Daily Value), iron (222% of the Daily Value), and dietary fiber (127% of the Daily Value). Note that it is relatively high in sodium, at 1766mg per serving (77% of the Daily Value).
Estimated from ingredients & per-serving nutrition — verify against package labels for allergies or strict diets.
* % Daily Values based on a 2,000 calorie diet (FDA 2020).
Frequently Asked Questions
Can I make this casserole ahead of time?
Yes, you can prepare the casserole a day in advance. Assemble it in the baking dish, cover it with plastic wrap, and refrigerate. When you're ready to bake, remove the wrap and add a few extra minutes to the baking time to ensure it's heated through.
What can I use instead of mashed potatoes?
If you're looking for a low-carb alternative, consider using mashed cauliflower or sweet potatoes. These options provide a unique flavor and texture while still holding the casserole together. You can also use a store-bought potato substitute for convenience.
Can I freeze this casserole?
Yes, this casserole freezes well. To freeze, let it cool completely, then wrap tightly in plastic wrap or aluminum foil. It can be frozen for up to three months. When you're ready to enjoy it, thaw in the refrigerator overnight and reheat in the oven.
Nutrition is estimated from USDA FoodData Central ingredient data and may vary with brand, portion and preparation — see our methodology. This information is for general educational purposes only and is not medical or dietary advice (disclaimer).