01 -
Preheat the oven to 400°F. Grease a medium glass pie plate (9-inch) with vegetable oil.
02 -
In a large skillet, heat some oil over medium heat and fry the onion until soft, about 3 minutes.
03 -
Add the ground beef to the skillet, breaking it apart with a spatula. Cook until browned, about 10 minutes. Drain any excess fat from the beef and season with salt, black pepper, and optionally, garlic powder.
04 -
Spread the cooked and seasoned beef mixture evenly into the prepared pie plate. Sprinkle the cheddar cheese over the beef layer.
05 -
In a small bowl, whisk together the Bisquick mix (or flour), milk, and eggs until combined. Pour this batter over the beef and cheese layers in the pie plate.
06 -
Bake for 20 to 25 minutes, or until a knife inserted in the center comes out clean.
07 -
Serve warm and enjoy this comforting slice of cheeseburger pie.