Cut 12 hot dogs, and 12 hotdog buns in half.
For each hot dog, cut three small lines 3/4 of the way up to be the ““top knockle.” The middle line should be deeper and more pronounced than the line on either side. The easiest way to do this is by jabbing the to tip of a cerrated knife into the hot dog.
repeat the knuckle cuts in bottom 1/4 of the hot dog.
cook hotdogs on sheet pan according to package instructions.
Meanwhile. Use kitchen scissors to single-layer pieces of onion into fingernail shapes- get creative!
Assemble Halloweenies by “gluing” fingernail onto the top of the hotdog with ketchup, once in the bun. Squirt ketchup down the side of the hotdog to look like blood.