3 medium sized potatoes
a couple slices of bacon
some bacon grease
Slice the potatoes and onion paper thin. Chop up the bacon and fry it in a medium sized pan. Once it's done, remove the bacon, set it aside, and leave the grease. Throw another spoon or so of bacon grease into the pan. Then, put in a layer of potatoes, followed by a layer of onion. Sprinkle some cheddar on. Repeat. When you get to the middle, put the bacon in with the cheddar. Also, work it such that the top layer is potato. Oh! and sprinkle some salt and pepper in there*. Drop a few spots of bacon grease onto the top potato layer. Cook until the bottom has gotten nice and crispy, then carefully slide it only a plate, then return it to the pan bottom side up. Or flip it in the pan, if you have that much faith in yourself. As you can discern from the photo, I managed to botch this part a bit. Cover and cook until it's done - if you've sliced the potatoes thin enough, the whole thing shouldn't take more than 20 minutes or so. Slice into wedges and serve.
*I forgot the salt and pepper and just added it at the end. It came out ok, but I think it would have been better if I'd integrated it into the cooking process.