Preheat oven to 350 degrees F (175 degrees C).
Place bacon in a large, deep skillet. Cook over medium high heat until evenly brown. Drain, crumble and set aside.
In a large bowl combine beans, chili sauce, onion, brown sugar and bacon.Pour into a 9×13 inch casserole dish.
Bake in preheated oven for 45 minutes to 1 hour.
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