Preheat the oven to 400 degrees F. Arrange the bacon on top of a broiler pan over a baking sheet. Bake the bacon until cooked, approximately 20 minutes. Bacon should be crispy.

In a bowl, combine the ground beef, Worcestershire sauce, grated onion and mustard. Season with salt and pepper. Form mixture into four patties and drizzle with oil.

Cook patties in a pre-heated cast iron skillet, flipping once, about seven minutes total. Top with cheese and cook another 2 minutes longer to melt cheese.

Melt a little butter in a pan over medium heat. Add eggs and cook to your liking.

Toast bun in pan and top with burger patty, egg and bacon. Serve with mayo or the condiments of your choice.