INGREDIENTS
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1/4 cup butter, softened
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1/4 teaspoon kosher salt
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1/3 cup sweetened condensed milk (or this homemade substitute for condensed milk)
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3 1/4 cups powdered sugar *
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1/2 teaspoon peppermint extract **
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Optional: 1/4 cup cocoa powder * (reduce the powdered sugar by the amount of cocoa used)