Spanish Delight

2 cans water (use tomato 1 lb. ground meat paste can)
1 chopped onion
1 box gluten free flat noodles
1 chopped bell pepper Sliced cheese
1 can sliced mushrooms Sliced onion for garnish
1 sm. can tomato paste
1 sm. bottle tomato ketchup 

Brown meat, onion, bell pepper and mushrooms. In a saucepan heat to boiling tomato paste, ketchup and water. Season to taste and add browned meat. Cook 1 box flat large noodles and drain. Put layer noodles then meat mixture, repeating and ending with meat sauce. Put slices of cheese on top and garnish with sliced onion. Bake at 400 until heated all the way through.