Preheat oven to 400 degrees F.

Line a half sheet pan with parchment paper or aluminum foil.

Place bacon on sheet pan in a single layer. If the bacon is thinner, you might need 2 pans. 

Sprinkle generously with pepper.

Bake for 10 minutes, flip, then bake another 5-10 minutes until crisp and done.

Remove bacon from the oven and place it in a single layer on a plate lined with paper towels to keep it crispy.

Meanwhile, in a ceramic dutch oven or medium/large saucepan, brown ground beef.

When ground beef is almost cooked add chopped white onion, dry mustard, and a little salt and pepper. Cook until fully browned.

Add vinegar, brown sugar, white sugar, ketchup, and all the beans and stir to combine.

Bake, covered, at 350 degrees F for 30-40 minutes until warm through and thickened.

Season with salt and pepper to taste and serve.