This Millionaire Spaghetti recipe from Fiesta layers creamy carbonara pasta, sweet spaghetti sauce, and heaps of mozzarella cheese.
You’re craving a pasta bake that’s indulgent but cozy, impressive but fuss-free. Lots and lots of cheese. Easier than lasagna, but more than a baked mac. What do you make?
Enter: Millionaire Spaghetti. Layers of creamy carbonara pasta and birthday party spaghetti sauce, crowned with the best part of any baked pasta: a melty, crispy-edged blanket of mozzarella cheese. Saucy, cheesy, and rich like a Lotto jackpot winner.
Leave it to Fiesta to deliver crowd-pleasing goodness without breaking the bank. Cook your Fiesta Spaghetti to al dente so it gets a tender bite after baking. For the layers, Fiesta’s Sweet Spaghetti Sauce and Creamy Carbonara Sauce sets you up with a flavorful, ready-made base.
Millionaire Spaghetti is perfect for celebrations of all sizes, both small wins and major milestones. Your family will be scraping their plates and asking for seconds (or thirds). If you’re lucky, you’ll have leftovers to enjoy the next day—they get even better then.
Prepare for baking: Preheat oven to 375°F.
Cook aromatics and beef: Heat oil in a pot over medium heat. Add garlic and onions to the pan and cook until fragrant. Increase heat to high and add ground beef to the pan. Let cook undisturbed to sear, then stir to cook further, until fully browned and all moisture has evaporated.
Make spaghetti sauce: Add Fiesta Sweet Spaghetti Sauce to the pot and stir to combine. If the mixture looks too thick, add water to thin it out to your desired consistency—you want a rich, saucy mixture but not runny. Add the beef broth cube for extra flavor. Once sauce starts boiling, reduce heat to medium-low and let sauce simmer for 5 minutes. Season with salt and pepper to taste. Set aside.
Make cheesy carbonara sauce: While your spaghetti sauce simmers, make the cheesy carbonara layer. In a separate pan, melt butter over medium heat. Add garlic and onions, then cook in melted butter until fragrant and softened. Add Fiesta Creamy Carbonara Sauce and processed cheese. Stir until cheese has fully melted into the sauce. Set aside.
Cook spaghetti: Bring a pot of salted water to a boil. Cook Fiesta Spaghetti Noodles for 6–8 minutes or until al dente. Drain and add cooked spaghetti to the cheesy carbonara sauce. Toss until noodles are fully coated in the sauce.
Assemble pasta: Prepare a large casserole or baking dish. Spread a thin layer of carbonara cheese pasta across the bottom of the dish. Spoon a generous layer of spaghetti sauce on top, covering the pasta. Sprinkle ½ cup mozzarella cheese across the spaghetti sauce layer. Continue layering with remaining carbonara pasta, spaghetti sauce, and mozzarella, ending with more grated mozzarella on top.
Bake and serve: Bake pasta for 7–10 minutes, or until the cheese topping is golden and crisp. Finish with chopped parsley. Serve hot.
