Baked Spaghetti Casserole

Baked Spaghetti Casserole

Ingredients:
12 ounces spaghetti
1 tablespoon olive oil
1 medium onion, chopped
3 garlic cloves, minced
1 pound ground beef or Italian sausage
1 can (28 ounces) crushed tomatoes
1 can (14 ounces) diced tomatoes, drained
1 teaspoon dried oregano
1 teaspoon dried basil
Salt and black pepper to taste
2 cups shredded mozzarella cheese
1/2 cup grated Parmesan cheese
Fresh basil leaves for garnish (optional)