Ingredients:
1 large onion, chopped (1 cup)
1 pound ground beef
½ teaspoon salt
Ground black pepper, to taste
Garlic powder, to taste (optional)
2 cups grated Cheddar cheese
½ cup Bisquick mix (or all-purpose flour for a firmer texture)
1 cup whole milk
3 large eggs (for a more custard-like filling)
4 slices of American cheese (for that classic cheeseburger appearance)
Directions:
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