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The Best Irish Spiked Brownies with Irish Cream & Whiskey Glaze

Stacked Irish spiked brownies with rich chocolate layers, creamy Irish cream filling, and glossy whiskey glaze on a light marble background.

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Ultra-fudgy Irish spiked brownies made with Guinness stout, layered with a smooth Irish cream filling, and finished with a rich whiskey chocolate glaze. These decadent brownies are perfect for St. Patrick’s Day, holidays, or anytime you want a bakery-style dessert with an Irish twist.

Ingredients

Scale

Brownie Layer

  • 1 cup Guinness® draught stout

  • 1 cup granulated sugar

  • ½ cup plus 1 tablespoon unsalted butter, softened

  • 4 large eggs

  • 1½ cups chocolate syrup

  • 1 teaspoon vanilla extract

  • 1 cup all-purpose flour

  • ½ teaspoon salt

  • Nonstick cooking spray

Irish Cream Filling

  • 3 cups powdered sugar

  • Butter (as listed in recipe instructions)

  • ¼ cup Irish cream liqueur

Whiskey Chocolate Glaze

  • 1⅓ cups semisweet chocolate chips

  • Butter (as listed in recipe instructions)

  • 1 tablespoon Irish whiskey

  • 1 tablespoon light corn syrup

Instructions

  • Preheat oven to 350°F. Line a 13×9-inch baking dish with foil, leaving overhang, and spray with nonstick spray.

  • In a small saucepan, bring Guinness to a boil. Reduce heat and simmer until reduced to about ⅔ cup. Cool slightly.

  • Beat sugar and butter until light and fluffy. Add eggs one at a time. Mix in chocolate syrup, vanilla, and reduced stout.

  • Add flour and salt; mix just until combined. Pour batter into pan and bake 30 minutes. Cool, then refrigerate 1 hour.

  • Beat powdered sugar and butter until fluffy. Add Irish cream and beat until smooth. Spread over chilled brownies.

  • Melt butter and corn syrup, pour over chocolate chips and whiskey. Let stand, then whisk until smooth.

  • Spread glaze over filling. Refrigerate 2 hours or overnight.

  • Lift brownies from pan and slice into bars.

Notes

  • For clean slices, chill completely and wipe knife between cuts.

  • Brownies taste even better the next day.

  • Store covered in the refrigerator for up to 5 days.

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