Preheat oven to 400º F. Heat a large skillet over medium flame, add bacon and brown. Remove bacon and set aside. Pour off bacon fat; add onion to pan and sauté until translucent. Add garlic and stir for 1 minute longer.
Pour beans into a 9 x 13 casserole dish. Add bacon, onion, garlic, mustard, brown sugar and bbq sauce. Season with salt and pepper to taste. Place dish in oven and bake for 45 minutes to 1 hour, or until beans are bubbly, caramelized around the edges and slightly browned on top. Garnish with cilantro, chives or parsley. Enjoy!