Cook bacon. You can place bacon slices on a plate lined with a paper towel, and cook in the microwave for 4 minutes or until bacon is crispy.
While bacon in microwaving, you can cook your over easy egg in a skillet on the stove. Melt butter in skillet over medium heat. Carefully crack egg over skillet, being careful not to bust the yolk.
Cook egg for about 2 minutes, and carefully flip egg over, using a spatula and cook for another minute or so. You'll want the egg white fully cooked but the yolk still be runny inside.
Build the sandwich: Place slice of cheese on bottom bun, layer cooked bacon and top with over easy egg. Place top bun on top, and serve!
Notes
Feel free to change up the cheese flavor, bun type and more, to create the perfect sandwich! This recipe makes one sandwich but simply increase amounts to make as many sandwiches that you need.