Cook bacon in a medium skillet over medium-high heat until crisp. Drain on paper towels, dice, and set aside. Sauté the onion and bell pepper in the same pan (utilizing the leftover bacon grease).
In a large mixing bowl, combine the onions, bell pepper, bacon and white beans. Fold in the KC Masterpiece® sauce until everything is evenly coated. Transfer the mixture to a 1-quart casserole dish and cook for 20-30 minutes.