Easy Cheeseburger Quiche
Ingredients:
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1 tablespoon oil
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1 large onion, chopped
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1 pound ground beef
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1 teaspoon meat seasoning, or to taste
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1 pinch garlic powder, or to taste
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1 pinch herbes de Provence, or to taste
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salt and ground black pepper to taste
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4 eggs
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½ cup skim milk
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½ cup mayonnaise
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2 tablespoons all purpose flour
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1 ¼ cups shredded sharp Cheddar cheese
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1 pastry for a 9-inch deep dish pie crust