INGREDIENTS
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Brownies:
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1 (roughly 18 oz) box chewy fudge brownie mix, plus eggs, oil, and water needed to prepare
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1 teaspoon mint extract
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20 Mint Oreo Cookies, divided
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Fudge Frosting:
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4 Tablespoons salted butter
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2 Tablespoons Dutch-process (dark) cocoa powder
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3 Tablespoons milk
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1 1/2 cups powdered sugar
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1/2 teaspoon vanilla extract
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Mint Buttercream:
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1 stick salted butter
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1 teaspoon mint extract
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1/2 teaspoon vanilla extract
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3 Tablespoons heavy cream
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1 2/3 cups powdered sugar
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green food coloring