1. Start by crisping up the chopped bacon in a large skillet over medium heat. Be sure to turn the pieces occasionally until they reach a delightful crunch. Once done, use a slotted utensil to transfer the bacon to a paper towel-lined plate, reserving the flavorful bacon fat in the pan.

2. In the same skillet with the bacon fat, add the thinly sliced onions and stir to coat. Reduce the heat to medium-low and let the onions cook slowly, stirring occasionally, until they’re tender and golden brown, about 25-30 minutes.

3. In a large bowl, combine the ground beef, Worcestershire sauce, stone ground mustard, garlic powder, Old Bay seasoning, salt, pepper, and the reserved crisp bacon pieces. Mix the ingredients gently until just combined.

4. Divide the burger mixture into 4 equal portions and shape them into patties about 1 inch thick. Heat a little olive oil in the same skillet over medium-high heat. Cook the patties for 4-5 minutes per side, or until they reach your desired level of doneness.

5. During the last minute of cooking, place a slice of cheddar cheese on top of each patty. Cover the skillet with a lid to allow the cheese to melt perfectly over the hot burgers.

6. Lightly toast the hamburger buns. Then, layer the cheeseburger patty, the caramelized maple bourbon onions, and any additional toppings you desire.