The Kitchn: Festive brownies fit for your St. Patrick's Day celebration
1/4 cup unsweetened Dutch process cocoa powder
1 cup granulated sugar
1 teaspoon vanilla extract
2 large eggs
1/2 cup all-purpose flour
1/2 teaspoon kosher salt
For the buttercream:
1/2 cup (1 stick) unsalted butter, at room temperature
2 ounces cream cheese, at room temperature
2 tablespoons green creme de menthe liquor
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