INGREDIENTS
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1 cup all-purpose flour
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3 tablespoons Nestle Toll House Cocoa powder
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1/2 teaspoon baking powder
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1/2 teaspoon baking soda
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1/4 teaspoon table salt
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3 tablespoons unsalted butter
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4 ounces (1/2 cup) Nestle Dark Chocolate Morsels
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1/2 teaspoon NesCafe Instant Coffee
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1 teaspoon vanilla extract
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1/2 cup light brown sugar
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1/2 cup sour cream
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1 large egg yolk
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1 cup confectioners sugar
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2-4 tablespoons milk
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1 teaspoon vanilla extract