Italian Hot Bake

First time I made this Italian Hot Bake, I made it exactly as written. The next time I made some changes, because I thought it needed more flavor. I used mild Italian sausage instead of ground beef, added some chopped pepperoni and sliced black olives. I did not put this in the oven. After browning the sausage and onion and green pepper I added the spices and tomato sauce. Simmered for about 20 minutes; covered. Added the pepperoni and olives, stirred. About 10 minutes before serving, I added the cooked bow ties. It was more to my liking. This is a keeper. What would you change? Serves 4 Total Time: 70 minutes

Ingredients:

1-1/2 cups uncooked multigrain bow tie pasta (about 4 ounces)
1 pound lean ground beef (90% lean)
1 cup sliced fresh mushrooms, divided
1/2 cup chopped onion
1/2 cup chopped green pepper
1 teaspoon dried oregano
1/2 teaspoon garlic powder
1/4 teaspoon onion powder
1/8 teaspoon pepper
1 can (15 ounces) tomato sauce
1/2 cup shredded part-skim mozzarella cheese, divided
2 tablespoons grated Parmesan cheese, divided

Directions:

Preheat oven to 350°. Cook pasta according to package directions for al dente; drain. Meanwhile, in a large skillet coated with cooking spray, cook and crumble beef with 1/2 cup mushrooms, onion and green pepper over medium-high heat until no longer pink, 5-7 minutes. Stir in seasonings and tomato sauce; bring to a boil. Reduce heat; simmer, covered, 15 minutes. Place pasta in an 8-in. square baking dish coated with cooking spray. Top with meat sauce and remaining mushrooms. Sprinkle with 1/4 cup mozzarella cheese and 1 tablespoon Parmesan cheese. Bake, covered, 35 minutes. Uncover; sprinkle with remaining cheeses. Bake until heated through and cheese is melted, 5-10 minutes.