Million Dollar Spaghetti Casserole Recipe

This million dollar spaghetti casserole is out-of-this-world delicious. It combines spaghetti noodles, Italian seasoning, Italian sausage, and marinara sauce, all layered in a creamy three-cheese blend. Yeah, it's so tasty, tasty! And it's so easy to make too. In fact, just 20 minutes of prep work is all you'll need to invest to put this million dollar spaghetti casserole together, and the oven takes care of the rest! 

The Best Million Dollar Spaghetti Casserole

Dinner doesn't get any easier - or more delicious - than this million dollar spaghetti casserole. Honestly, it might be one of my favorite pasta dishes ever!

And, honestly, it's crazy easy to make too. Just 3 simple steps are all you'll need to follow to make it. Plus, the majority of the time it takes to cook is completely hands-off since the oven does the heavy lifting - or should I say cooking?

By the way, while your spaghetti casserole is baking, you'll have plenty of time to make this air fryer garlic bread to serve alongside it.

Why This Recipe Works

A winning combination. From the flavorful meat sauce to the tender spaghetti noodles and layers of cheese, there's a whole lot to love about this recipe.

Perfect for a crowd. This recipe makes a pretty big, filling casserole, so it's perfect for serving at a dinner party or big family dinner.

Family favorite. Anyone who likes spaghetti absolutely loves this recipe. It'll be a hit with both kids and adults whenever you serve it! 

Ingredients

Another reason this is one of my favorite pasta recipes is that it's made with all simple ingredients. In fact, you probably have everything you need on hand to make it already!

Anyway, here's what you'll need to make this million dollar spaghetti casserole:

• 8 oz. spaghetti noodles
• ½ onion, chopped
• 1 garlic clove, minced
• ½ lb. Italian sausage (chopped or ground)
• 1 tbsp. Italian seasoning
• 2 cups tomato sauce (or any spaghetti sauce)
• 4 oz. ricotta cheese (or cream cheese)
• 4 oz. cottage cheese
• 2 cups shredded mozzarella cheese
• 1-2 tbsp. olive oil
• Fresh parsley to serve

Pretty simple stuff, eh?

Oh, and you can use almost all of these same ingredients to make this fried spaghetti recipe as well. It's another easy and delicious spaghetti recipe, so I highly recommend giving that a shot sometime too!

If you have extra sauce and mozzarella cheese, you have to try making this ravioli casserole sometime too.

How To Make Million Dollar Spaghetti Casserole

1. Prep: Preheat the oven to 350°F (180ºC). Cook the pasta according to package instructions and strain it. Return the strained pasta to the pot, add half of the spaghetti sauce, and give it a good mix. Set aside for later.

2. Cook the sausage: In a large skillet, heat olive oil and add the onion and garlic. Cook for a couple of minutes until soft and fragrant. Add the sausage and Italian seasoning to the skillet with the onions and garlic. Cook the sausage, breaking it apart, until it's browned on all sides. Add the rest of the sauce and mix well.

3. Make the cheese mixture: In a large bowl, mix the ricotta cheese or cream cheese, cottage cheese, and half of the mozzarella cheese. Give everything a good mix until the cheeses are fully combined.

4. Assemble the casserole: Take out a medium-sized casserole dish and add half the spaghetti to it, followed by half of the cheese mixture, and then finally half of the sausage mixture. Add the remaining spaghetti on top of that, followed by the rest of the cheese mixture and the rest of the sausage. Finally, top everything with the other half of the mozzarella cheese.

5. Bake and serve: Put the casserole dish in the oven and bake the casserole for about 25 minutes until the cheese is nice and bubbly. Garnish with some fresh parsley and serve warm. Enjoy!

Tips To Make The Best Recipe

• Substitute ground Italian sausage with ground beef, ground turkey, or ground chicken for the ground meat sauce.
• Use cream cheese instead of ricotta cheese for a different flavor and creamy texture.
• Top the casserole with mozzarella and parmesan cheese before baking for a cheesier flavor.
• Add some grated parmesan cheese on top of the casserole after it bakes.

How To Store Million Dollar Spaghetti Casserole

In the fridge: Store the leftover spaghetti to an airtight container and store it in the fridge for about 3 days.

In the freezer: Transfer the million dollar spaghetti casserole to a freezer-safe bag or airtight container and freeze it for up to 2 months. 

Reheating: Put the millionaire spaghetti back in a casserole dish and heat it back up in the oven at 350°F for about 10 minutes or until the cheese melts and it's warmed through. Let the frozen casserole thaw in the fridge overnight or add more reheating time.

FAQS About This Million Dollar Spaghetti Casserole Recipe

Can I make this million dollar spaghetti casserole ahead of time?

Yes! If you want to make it ahead of time, just assemble the casserole up until baking and either put a lid on the baking dish or wrap it tightly with plastic wrap. Store it in the fridge overnight and add some more baking time when you cook it the next day.

What can I serve with million dollar spaghetti?

It's delicious with these oven baked meatballs, Italian cheese bread, and La scala chopped salad for a complete Italaia feast.

More Casserole Recipes

If you're looking for some more easy casserole recipes, we have a ton on the blog you can try next!

Here are some reader favorites:

• Dump and bake meatball casserole
• Million dollar chicken casserole
• Crack chicken casserole
• Chicken mushroom casserole
• John Wayne casserole
• Pork chop casserole
• Pepperoni pizza casserole

Oh, and as always, make sure to check us out on YouTube, TikTok, and Instagram! We post new recipes on them every day.