How many servings does this recipe make?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

What ingredients do I need for Spaghetti Casserole?

You need 10 ingredients. The key ingredients include: 8 -10 hot Italian sausage links, cut into pieces, 1 good sized onion, sliced, 3 garlic cloves, minced, 1 -2 green pepper, sliced (red and yellow pepper are great too), and more.

Is Spaghetti Casserole suitable as pasta & noodles?

Yes, Spaghetti Casserole falls under the Pasta & Noodles category and is a great choice for this type of meal.

How do I store leftover Spaghetti Casserole?

Store leftovers in an airtight container in the refrigerator for up to 3–4 days. Reheat gently before serving.

Spaghetti Casserole Recipe

Name: Spaghetti Casserole
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 8 -10 hot Italian sausage links, cut into pieces; 1 good sized onion, sliced; 3 garlic cloves, minced; 1 -2 green pepper, sliced (red and yellow pepper are great too); salt and pepper; 1 (16 ounce) package spaghetti, cooked and drained (you may not need the whole package); 4 cups canned crushed tomatoes (2 26 oz. cans); 14 12 ounces diced tomatoes (optional); 1 cup parmesan cheese; 4 tablespoons flour

Try this homemade Spaghetti Casserole recipe the whole family will love. Made with sausage links, onion, garlic and green pepper. Easy step-by-step inst…

This Spaghetti Casserole relies on simple, everyday ingredients such as good sized onion, sliced, garlic cloves, minced, salt and pepper and diced tomatoes (optional). It comes together quickly and makes 4 servings, at about 398 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.

It's versatile enough for an easy weeknight dinner yet satisfying enough for guests at the weekend. Serve it with your favorite sides, and keep any leftovers for a quick meal the next day.

Updated Jun 30, 2026

Serves 4 Pasta & Noodles

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Taste as you go and adjust the seasoning before serving.
Avoid overcrowding the pan — cook in batches if needed for the best texture.
Let the dish rest for a few minutes before serving so the flavors settle.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

A good 1:1 gluten-free flour blend works well if you need a gluten-free version.

No specific allergen information. Please check the ingredient list for possible allergens.

My Personal Notes

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Spaghetti Casserole

Tips for the best results

Variations & substitutions

My Personal Notes

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