1 lb. browned ground beef
1/4 c. diced onion
1 (15 oz.) can tomato sauce
1 tsp. garlic powder
3/4 tsp. salt
1/4 tsp. pepper
1 tsp. oregano
3 c. egg noodles, cooked
4 slices Mozzarella cheese

Combine all ingredients, except noodles and cheese. Put in 8 x 10 inch pan. Add layer of noodles. Cover with foil and bake 30 minutes at 350 degrees. Remove foil. Add cheese. Bake 10 minutes more.