Mixed Bean Casserole - cooking recipe

Ingredients

2 (16 oz.) cans baked beans
1 (15 oz.) can kidney beans, drained
1 (15 oz.) can pinto beans, drained
1/2 c. brown sugar
1 c. ketchup
1 small onion, chopped

Preparation

Combine all ingredients in a large casserole dish.
Mix well. Bake in a preheated 250\u00b0 oven for 3 hours.
Stir everything.