Preheat your oven to 375°F (190°C). In a large skillet over medium-high heat, brown the ground beef along with the chopped onion. Drain off any excess grease. Pro Tip: For extra flavor, add a dash of Worcestershire sauce while browning the beef.
In the same skillet, stir in the condensed cream of mushroom soup, milk, 1 cup of shredded cheddar cheese, mayonnaise, mustard, garlic powder, and black pepper. Mix well until everything is evenly combined and the cheese is melted. This mixture is what gives the cheeseburger pie its creamy, cheesy goodness.
Line a 9-inch pie plate with one of the refrigerated pie crusts. Pour the meat mixture into the crust-lined pie plate. Top with the remaining shredded cheddar cheese.
Place the pie in the preheated oven and bake for 30-35 minutes, or until the crust is golden brown and the filling is bubbly. Tip: If the crust starts to brown too quickly, cover the edges with foil.
Remove the pie from the oven and let it cool for a few minutes before slicing and serving. Top with your favorite cheeseburger toppings, such as pickles, lettuce, tomato, ketchup, and mustard. Enjoy your delicious cheeseburger pie!
Notes
Note: These values are estimates and can vary based on specific ingredients and portion sizes.