Lasagna in a Bun

8 small hoagie or submarine buns 8" long
1 pound ground beef
1 cup spaghetti sauce
1 teaspoon garlic powder
2 teaspoons Italian seasoning
1slightly beaten egg
1 cup ricotta cheese
1/4 cup parmesan cheese
1cup mozzarella cheese; shredded, divided

Cut thin slices off tops of buns and reserve tops. Hollow out centers, leaving 1/4" thick shells; discard or save for another use. In a skillet, brown ground beef; drain. Add spaghetti sauce, garlic powder, and Italian seasoning. Cook 4-5 minutes or until heated through. Meanwhile, combine egg, ricotta, Parmesan and half of the mozzarella cheese; mix well. Spoon meat sauce into buns; top with cheese mixture and replace tops . Place on a baking sheet. Cover loosely with foil and bake at 350 for 20-25 minutes or until heated through and the cheese is melted.