1 (48 oz.) jar Great Northern beans
1 can tomato soup
1 small onion, chopped
1 1/2 c. brown sugar
1/4 tsp. salt
1/2 tsp. mustard

Combine all in a casserole dish. Top with sliced bacon.

Bake at 350°F for 2 hours.

Serves 8 to 10.