01 -
Preheat your oven to 400°F (200°C). Lightly grease a 9-inch glass pie plate with vegetable oil.
02 -
In a large skillet over medium heat, heat a small amount of oil. Add the chopped onion and sauté until softened, 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, then season with salt, black pepper, and garlic powder if using.
04 -
Spread the cooked beef mixture evenly in 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 smooth. Pour the batter evenly over the beef and cheese layers.
06 -
Bake for 20-25 minutes, or until a knife inserted in the center comes out clean.
07 -
Let the pie cool slightly before slicing. Serve warm and enjoy!