INGREDIENTS
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1 box brownie mix, plus additional ingredients called for on the package (I used an 18-ounce box of Ghirardelli brownie mix, but anything similar will work fine)
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2 tablespoons bourbon
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For the Frosting:*
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3 tablespoons butter, softened
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1 1/2 cups powdered sugar, sifted
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2-4 teaspoons bourbon, plus additional, as needed
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1/4 teaspoon vanilla
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Pinch of salt
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Optional: Sprinkles