Chili Bean Casserole - cooking recipe

Ingredients

1 lb. ground beef
1 diced onion
2 Tbsp. butter
1 c. ketchup
2 Tbsp. mustard
1 tsp. vinegar
4 or 5 Tbsp. brown sugar
1 can kidney beans, drained
2 cans Northern beans, drained

Preparation

Brown beef, onion and butter.
Drain off fat. Mix the remaining ingredients.
Bake at 400\u00b0 for 45 minutes.