Step 1

Preheat the oven to 350°F. In a large oven-safe skillet or dutch oven cook the bacon over medium-high heat on the cooktop until it just starts to crisp. Add the onions and cook until they are translucent - about 5 minutes.

Step 2

Reduce the heat to low and add the pork and beans, ketchup, dark brown sugar, drained pineapple, mustard, apple cider vinegar, salt, and pepper and mix well.

Step 3

Once combined, place uncovered in the oven and bake for 1 hour. Serve warm.