Weave your bacon about 4 to 5 pieces wide, so that you can cut two buns out of the weave.
Use a bowl or something else bun sized to cut around for your bacon buns.
Bake at 400°F. Midway through cooking flip the bacon over onto a wire rack and finish cooking on the wire rack.
Shape ground beef into two 3 to 4 ounce balls. Keep chilled until ready to cook.
Fry chopped onions in butter until they begin to caramelize. Set aside until plating.
Heat a heavy bottomed pan on high until it begins to smoke. Then place one beef ball in the pan and smash down with a thick spatula until patty is thin. Do NOT press down after 20 sec of cooking or juice will run out.
When the patty bottom becomes brown and crispy scrape off of the pan keeping the browned crust intact on the patty. Flip and add salt, pepper, and cheese.
*depending on the saltiness of your bacon you may not want to add more salt
After 30 seconds remove from pan and repeat steps with the other meat patty.
Assemble burger and enjoy! Feel free to add other toppings to suit your own tastes.