How to Make It
Preheat oven to 325°F. Lightly grease a 9-inch baking pan with cooking spray.
Stir together prepared brownie mix, chocolate chips, and espresso powder. Spoon batter into prepared baking pan; bake in preheated oven until a toothpick comes out with a few wet crumbs, 40 to 45 minutes. Allow brownies to cool completely in pan on a wire rack, about 1 hour.
Meanwhile, beat together powdered sugar, butter, and salt in the bowl of an electric mixer on low speed until well blended. Scrape down sides of bowl, and beat on medium speed until fluffy, 2 to 3 minutes. Beat in Baileys until light and fluffy. Spread frosting on completely cooled brownies, and sprinkle with chopped espresso beans. Cut into 9 squares.