1 (8 oz.) can tomato sauce
1 lg. cut up onion
1 lemon, sliced real thin
2 tbsp. brown sugar
1 tsp. garlic salt
1 tbsp. French mustard
1 tsp. pepper
1 bell pepper, diced
1/2 stick butter

Combine all ingredients in saucepan and cook until onions and bell peppers are done.