Million Dollar Spaghetti Casserole Recipe

If you’re looking for a comforting, show-stopping dinner that feels like a big warm hug, you’ve got to try this Million Dollar Spaghetti Casserole Recipe. I absolutely love how it combines hearty Italian sausage, gooey cheeses, and tender spaghetti all baked to bubbly perfection. When I first tried this recipe, I was amazed at how simple ingredients turned into something that my whole family goes crazy for—plus, it’s perfect for feeding a crowd or enjoying as leftovers. Trust me, once you make it, this casserole is going to be a staple in your dinner rotation. Let’s dive in and I’ll walk you through every delicious detail!

this Recipe

Ingredients You’ll Need

I love this recipe because it uses straightforward ingredients that really complement each other, creating layers of flavor and texture that just work. When you’re shopping, grabbing quality Italian sausage and fresh cheeses makes a noticeable difference.

• Uncooked spaghetti: Make sure to boil it just shy of al dente so it finishes cooking perfectly in the oven.
• Italian sausage: I prefer mild, but spicy works if you want a little kick. You can either get ground sausage meat or remove casings from links.
• Onion: Adds sweetness and depth—chop finely for even cooking.
• Garlic: Fresh is best for that pungent, aromatic punch.
• Red pepper flakes (optional): I add these when my family wants just a hint of heat.
• Marinara sauce: A good quality jarred sauce works great, or homemade if you’re feeling fancy.
• Mozzarella cheese: Goes on top for a golden, gooey finish.
• Cream cheese: Soften it before mixing to get a smooth, rich cheese layer.
• Ricotta cheese: Gives a fluffy creaminess that balances the sausage.
• Parmesan cheese: Freshly grated is worth the effort—it adds sharpness and umami.
• Garlic powder and dried oregano: Season the cheese layer just right with these pantry staples.
• Salt & pepper: To taste, and don’t forget to season your layers properly for the best flavor.

Variations

I always encourage you to make a recipe your own. Over time, I’ve added little twists to this Million Dollar Spaghetti Casserole Recipe that keep it exciting and tailored to different moods or diets.

• Meat-free version: Swap the Italian sausage for sautéed mushrooms and a medley of roasted veggies—it’s still comforting and just as tasty.
• Extra cheesy: Adding a layer of shredded provolone or swapping mozzarella for smoked mozzarella ups the flavor for cheese lovers like me.
• Spicy twist: Besides red pepper flakes, I’ve tried stirring in a splash of hot sauce or using spicy Italian sausage for more heat.
• Herb upgrade: Fresh basil or parsley sprinkled on top just before serving adds freshness that my family adores.

How to Make Million Dollar Spaghetti Casserole Recipe

Step 1: Build Your Creamy Cheese Layer

Start by mixing the cream cheese, ricotta, parmesan, garlic powder, and oregano in a medium bowl until it’s smooth and silky. A quick tip: let the cream cheese soften at room temperature beforehand or zap it for 20-30 seconds in the microwave to avoid lumps. This mixture is the heart of the casserole’s richness so get it nice and creamy.

Step 2: Cook the Spaghetti Just Right

Bring a large salted pot of water to a boil, then add your spaghetti. Cook it for two minutes less than the package directs—this way it finishes cooking perfectly in the oven without getting mushy. Drain it well and then put the pasta back into its pot; we’ll add the sauce and sausage very soon.

Step 3: Brown the Sausage and Add the Flavors

While the pasta is cooking, brown your sausage and chopped onion in a skillet over medium-high heat. Break up the meat with a spoon and cook until no pink remains, about 10 minutes. Next, stir in the minced garlic and red pepper flakes (if using) and cook for another minute, until fragrant. Spoon out any excess fat to keep the casserole from getting greasy.

Step 4: Combine Pasta, Sauce, and Sausage

Pour the cooked sausage mixture into the pot with your spaghetti, then add both jars of marinara sauce. Toss everything together with tongs or two large spoons so the pasta gets perfectly coated and flavorful. This step is where the magic starts—the noodles soak up all that saucy goodness.

Step 5: Layer the Casserole and Bake

Spread half of the pasta mixture into a 9×13 baking dish, smoothing it out evenly. Then, dollop and spread your creamy cheese layer on top. I won’t lie, this part can get a little messy—don’t stress about perfect edges or an even spread, it all tastes wonderful no matter what. After that, add the remaining pasta on top and sprinkle the shredded mozzarella cheese over everything.

Cover the dish with foil and bake in a preheated 375°F oven on the top rack for 30 minutes. Then, remove the foil and broil for a few minutes until the cheese bubbles and turns a gorgeous golden brown—keep a close eye on it here to avoid burning. Let the casserole sit for 5 to 10 minutes before serving to help it set and make cutting easier.

How to Serve Million Dollar Spaghetti Casserole Recipe

Garnishes

For me, a sprinkle of freshly chopped basil or parsley on top adds a pop of color and a fresh herbal note that cuts through the richness beautifully. Sometimes I also add a little extra grated parmesan or a drizzle of good olive oil just before serving.

Side Dishes

This casserole is pretty hearty on its own, but I love pairing it with a crisp green salad tossed in a light vinaigrette or some garlic bread for dipping. Roasted or steamed veggies like broccoli or green beans make a great balanced meal, too.

Creative Ways to Present

For family gatherings, I’ve tried layering this casserole in individual ramekins—it makes each serving feel special and beautiful. If you want to impress guests, a sprinkle of fresh herbs and a small side plate with olives and cured meats turns this into an Italian feast experience.

Make Ahead and Storage

Storing Leftovers

Leftovers? Oh yes. I let the casserole cool completely, then cover it tightly with plastic wrap and foil. It keeps well in the fridge for up to 4 days, and I love having it ready for quick lunches or easy weeknight dinners.

Freezing

I’ve frozen this casserole a couple of times, especially when making double batches. Wrap the dish tightly with plastic wrap and foil, then pop it in the freezer for up to 3 months. When you want it, thaw overnight in the fridge before reheating.

Reheating

To reheat, I cover the casserole with foil to prevent drying out and bake it at 350°F for 20-25 minutes until warmed through. If you want to revive the bubbly cheese top, remove the foil for the last few minutes. You’ll find that the flavors taste even better the next day!

FAQs

Final Thoughts

Honestly, the Million Dollar Spaghetti Casserole Recipe is one of those dishes I recommend to friends when they want something both impressive and easy. It feels like a treat but doesn’t require hours in the kitchen. I love how approachable it is, and every time I serve it, it gets rave reviews and seconds. Go ahead, make a big batch—you won’t be sorry. Whether it’s a cozy family dinner or a special occasion, this casserole brings people to the table with smiles and full bellies. Give it a try and let me know how it turns out in your kitchen!

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