I do not know where the original recipe came from and I have no measurements but these are so good I have to post them.
Meanwhile partially cook some bacon strips and then use them to line the outside of the cup.
Bake in a 350 degree oven. I baked for 20 minutes and had hard yolks. If you want soft/runny yolk 15 minutes should do it.
During the last few minutes of cooking sprinkle some grated cheddar cheese on top.