italian meatloaf

1 lb. ground beef
1/2 lb. ground mild Italian sausage
1 small onion, finely chopped
1/2 C. chopped bell pepper (I used orange, it was all I had in the freezer)
1 tsp. olive oil
1 tsp. Worcestershire sauce
1 clove garlic, minced
1/2 tsp. oregano
1/2 tsp. basil
1/2 tsp. parsley
1 egg, beaten
3/4 C. Italian bread crumbs
2 slices white bread, crumbled
1 T. milk
8 oz. shredded mozzarella cheese, reserve 3/4 C. for topping
1/4 C. parmesan cheese
1 C. marinara sauce, plus 1/2 -3/4 C. more for topping