INGREDIENTS
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Oil, for brushing
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2 pounds lean ground beef
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1 teaspoon salt
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1 teaspoon ground black pepper
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1 stick cold butter, cut into small cubes
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1 teaspoon garlic powder
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4 hamburger buns, split
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4 slices bacon, cooked crisp
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Lettuce, for serving
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Red onion slices, for serving
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Tomato slices, for serving
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Ketchup, for serving
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Mayonnaise, for serving