INGREDIENTS
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1/2 Cup Unsalted Butter, at Room Temperature
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1 Cup Sugar
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1 Teaspoon Distilled White Vinegar
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1 Large Egg
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1 Teaspoon Vanilla Extract
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1 1/2 Teaspoons Red Food Coloring
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1 1/2 Cups All Purpose Flour
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2 1/2 Tablespoons Cocoa
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1 Teaspoon Cornstarch
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3/4 Teaspoon Baking Powder
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1/4 Teaspoon Salt
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3/4 Cup, Plus More for Garnish White Chocolate Chips