This bacon cheeseburger has the bacon and cheese stuffed inside the patty. This little surprise makes a great-tasting burger. It's a perfect recipe for a quick weeknight meal, casual cookouts, and tailgating. You will want to choose beef that has sufficient fat so it will hold together well when stuffed. An 80/20 blend (20 percent) fat is good. Unfortunately, leaner ground beef will tend to fall apart and you'll have your delicious stuffing oozing out before you can enjoy the burger. Note that you need to cook your bacon before you add it to the stuffing. Otherwise, raw bacon inside a burger is still going to be raw when the burger is cooked. If you prefer cooked onion, you may saute your onion before adding it the mixture. Otherwise, it will be warmed but still have a raw flavor, which some people prefer.