01 -
Preheat the oven to 350 F. Lightly grease a 9x13-inch baking dish or a similar 3-quart casserole dish.
02 -
Cook the chopped bacon in a large skillet over medium heat until browned and crisp, 6-8 minutes. Transfer to a paper towel-lined plate and leave about 1 tablespoon of drippings in the skillet.
03 -
Add the ground beef, onion, bell pepper, salt, and black pepper to the skillet. Cook for 7-9 minutes, breaking up the beef, until the beef is browned and the vegetables are softened. Drain excess fat.
04 -
Stir in the garlic and smoked paprika. Cook for 30 seconds, just until fragrant.
05 -
Stir in the baked beans, barbecue sauce, ketchup, mustard, brown sugar, apple cider vinegar, and about three-quarters of the cooked bacon. Taste and adjust the mustard or vinegar if the sauce is too sweet.
06 -
Transfer the mixture to the prepared baking dish. Sprinkle the remaining bacon over the top and bake uncovered for 25-30 minutes, until bubbling at the edges and thickened on top.
07 -
Let the casserole rest for 10 minutes before serving so the sauce settles and thickens.