Step 1

Preheat an oven to 400ºF.

Step 2

Cook the bacon in a 12" cast iron skillet (or a large oven-safe skillet) over medium-high heat before transferring to a paper towel. (Crumble and save for later.)

Step 3

Drain the remaining bacon grease and place the ground beef in the skillet. Add the dry mustard, smoked paprika, salt, pepper, garlic powder, and Worcestershire sauce towards the end of cooking. Cook until no pink remains and turn off the heat.

Step 4

Push the ground beef to one side of the pan and place the sliced potatoes on the bottom of the skillet before covering with the beef and repeating on the other side, creating a bottom layer of potatoes covered with the ground beef. Top with remaining potatoes.

Step 5

Add the milk to the skillet and top with shredded cheddar.

Step 6

Bake for 40-50 minutes or until very little liquid remains and the cheese begins to bubble and slightly brown around the edges. (If you use a fattier ground beef or full fat milk, you may want to tilt the skillet and use a paper towel to blot any extra grease runoff towards the end of cooking.)

Step 7

Let the skillet cool briefly before serving. Top with the crumbled bacon and chopped green onion. Enjoy!