Baked Bean Casserole - cooking recipe

Ingredients

1 Tbsp. salad oil
1 c. onion, diced
1/2 c. tomato ketchup
1 (15 1/2 oz.) can butter beans, drained
1/2 c. brown sugar
1 (15 1/2 oz.) can kidney beans, drained
1 (18 oz.) jar Boston baked beans
2 Tbsp. vinegar
1 Tbsp. mustard
1/2 lb. or 1 1/2 c. Canadian style bacon, diced (optional)

Preparation

Saute onion in oil.
Combine all remaining ingredients in large bowl; add onion and mix thoroughly.
Put into a 2-quart casserole and bake, uncovered, in preheated 350\u00b0 oven for 1 1/2 hours.