Pioneer Woman Cheeseburger Pie
Ingredients: - 1 large onion, chopped (1 cup) - 1 pound ground beef - ½ teaspoon salt - Ground black pepper, to taste - Garlic powder, to taste (optional) - 1 cup grated Cheddar cheese - ½ cup Original Bisquick mix (or all-purpose flour) - 1 cup whole milk - 2 large eggs Instructions: