DELICIOUS GROUND BEEF PIZZA CASSEROLE

Steps:

• Grease a 13x9-inch baking dish.
• Cook the gound beef in a medium skillet with the onions, green peppers, garlic, salt pepper until meat is browned and veggies are tender; drain fat, and mix in the Parmesan cheese.
• Stir in the 1/2-pound pepperoni (chop this pepperoni to add to the mixture, leave the remaining half pound pepperoni sliced), mushrooms, pasta sauce; stir well until combined; simmer for 20-25 minutes on top of stove.
• Set oven to 350 degrees.
• Place the cooked rigatoni pasta on the bottom of the greased baking dish.
• Sprinkle with 2 cups mozzarella cheese over the pasta.
• Layer with pepperoni slices evenly over the cheese.
• Top with the ground beef/pasta sauce mixture.
• Bake uncovered for 30 minutes.
• Remove from oven, sprinkle with the remaining 2 cups mozzarella cheese.
• Return to oven and bake for 10 minutes longer, or until bubbly.
• Let stand for 10-15 minutes before serving.