Place 12" cast iron pan into smoker and pre-heat to 425°F.
Once the pan is hot, cook the bacon in the cast iron pan. Take out of the pan a couple minutes before it's crispy. Let cool and crumble into 1" pieces, set aside.
Cook diced onions and peppers in bacon fat until translucent, about 5 minutes. Then turn off the smoker (if using a pellet smoker) Lower temperature if using an offset smoker.
Add the rest of ingredients to the sauteed onions and peppers and mix well. Top with the crumbled bacon.
Turn smoker back on and maintain 250°F. Smoke beans for 45 minutes. Remove pan using a pot holder or towel (pan will be HOT). Enjoy!
Notes
Make sure to not cook the bacon all the way before topping the beans, otherwise it will become burnt
Apple or cherry works best with beans
Garnish with parsley or cilantro to put a little color into the beans