Instructions:
- Preheat the oven:
Set oven to 375°F (190°C). Fit the pie crust into a 9-inch pie dish and set aside. - Brown the beef:
In a skillet over medium heat, cook ground beef and onion until the beef is browned and onions are tender, about 7–9 minutes. Drain excess grease. - Add flavor:
Stir in garlic, ketchup, mustard, salt, and pepper. Cook for 1–2 minutes, then remove from heat. - Layer the filling:
Spoon the beef mixture evenly into the pie crust. Top with cheddar and mozzarella cheeses. - Make the batter:
Whisk together eggs, milk, and flour in a small bowl until smooth. Pour over the meat and cheese layers. - Bake:
Bake for 25–30 minutes, or until golden and set in the center. Allow to cool for 5–10 minutes before slicing. - Serve:
Serve warm. Optionally garnish with pickles, chopped tomatoes, or serve alongside a fresh green salad.
Variations:
- Add cooked, crumbled bacon to the beef mixture for a bacon cheeseburger version.
- Swap ketchup and mustard for BBQ sauce for a smoky twist.
- Use pepper jack cheese for a spicy kick.
Tips:
- If using frozen pie crust, let it thaw before adding the filling to avoid sogginess.
- For a firmer base, pre-bake the crust for 5–7 minutes before adding the filling.
- Store leftovers covered in the refrigerator for up to 3 days and reheat in the oven for best texture.
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Cheeseburger pie is proof that humble ingredients can produce bold, comforting flavor—just what every home cook needs in their back pocket.