Make Baked Spaghetti for the ultimate comfort food. Cooked spaghetti mixed with delicious sauce and baked to perfection for a delicious casserole recipe.
Preheat the oven to 350°F and spray a 9×13-inch baking dish with nonstick cooking spray.
Cook the spaghetti 2 minutes less than al dente according to the package directions. Drain and place in the prepared baking dish.
Brown the ground beef and onion in a large skillet over medium-high heat, breaking up the beef as it cooks. Cook until the beef is no longer pink, then drain any excess grease.
Stir in the garlic and cook for 1 minute.
Stir in the marinara sauce, Italian seasoning, salt, black pepper, and red pepper flakes. Simmer for a few minutes, until heated through.
Pour the meat sauce over the spaghetti and toss until evenly coated. Spread into an even layer.
Top with the mozzarella and Parmesan cheese.
Bake uncovered for 15–20 minutes, until the cheese is melted and the top begins to brown.
Let rest for 5–10 minutes. Top with chopped parsley, if desired, then cut into squares and serve warm.
Video
Notes
Refrigerate any leftovers in an airtight container for up to 5 days. Shred your own cheese instead of using pre-shredded so that it melts smoothly and for the best flavor in this recipe.