INGREDIENTS
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1 1/2 sticks (6 ounces) unsalted butter, plus more for greasing
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3/4 cup unsweetened cocoa powder
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1 1/2 cups granulated sugar
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2 teaspoons pure vanilla extract
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2 large eggs
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1 cup all-purpose flour
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Pinch of salt
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1 1/2 quarts ice cream (any flavor), softened