Tomato Sauce - cooking recipe

Ingredients

1 3/4 c. stewed tomatoes
1 slice onion
3 Tbsp. butter
2 1/2 Tbsp. flour
1/4 tsp. salt
1/8 tsp. pepper

Preparation

Cook onions and tomatoes together until done. Put in food processor. Add to butter and flour to which seasonings have been added. Cook together until thick.