Four Bean Baked Beans
Fry bacon till crisp, drain and reserve 3 tablespoons of bacon grease. Brown onions in reserved bacon grease, add sugar, mustard, salt and vinegar. Cook on simmer for 20 minutes, covered. Pour all the beans into a 3 quart baking dish, add onion mixture and crumbled bacon, mix well. Bake at 350 degrees F for 1 hour, uncovered.