Yields: 1 Serving Difficulty: Medium Prep Time: 15 Mins Cook Time: 25 Mins Total Time: 40 Mins
- Pre-heat oven to 400°.
- Cook beef and onion in a large skillet with the mustard powder until the meat is browned and the onion is translucent. Drain out the grease and pour the mixture into a 9-inch greased pie pan, spreading it out until it’s an even layer.
- Sprinkle cheeses over the meat and onion mixture.
- In a medium bowl, whisk together milk, half and half, onion soup mix, Bisquick, salt and pepper, mustard powder, and eggs. Pour this mixture on top of the cheese.
- Bake for 25 minutes and cool before serving.