Step 1

Preheat the oven to 350 degrees F.

Step 2

Coat a 9x13-inch baking dish with cooking spray.

Step 3

In a large skillet over medium heat, add 1/2 of the bacon and cook until it is crisp.

Step 4

Use a slotted spoon to transfer the cooked bacon to a paper-towel-lined plate and crumble it into small pieces.

Step 5

Drain all but 1 tablespoon of the bacon fat from the skillet.

Step 6

Add the ground beef and the onion to the bacon fat and cook, while crumbling, until it is no longer pink, about 5-7 minutes. Drain the excess grease.

Step 7

In a large bowl, add the crumbled bacon, the beef mixture, the kidney beans, the pinto beans, the Great Northern beans, the pork and beans, the tomato sauce, the brown sugar, 1/2 cup of the barbecue sauce, the ketchup, the cider vinegar, the yellow mustard, the chili powder, the salt, and the black pepper and mix well.

Step 8

Transfer the bean mixture to the prepared baking dish and top with the remaining uncooked bacon.

Step 9

Evenly brush the remaining barbecue sauce on top of the uncooked bacon.

Step 10

Bake the beans, uncovered, until the bacon is crisp, about 45-50 minutes.

Step 11

Plate and serve.