Cut bacon into pieces.
Cut medium onion into thin slices.
Cook bacon in skillet until bacon is crispy. Remove and set aside to drain.
Cook onion in skillet until caramelized.
(I turned skillet off and stopped at this point until we were ready to eat)
Add shrimp and cook until done.
Add juice of one lemon; parsley is optional.
Serve over cheese grits and top with bacon.
For the two of us (and enough for my lunch the next day), I used a pound of shrimp, 8 slices of bacon, and one small onion.