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Irish Coffee Cake on a green plate with a cup of coffee

Irish Coffee Cake

This Irish Coffee Cake with Irish Cream Glaze is soft, buttery, and packed with cozy coffee flavor. Featuring a cinnamon streusel and a rich Irish cream drizzle, it’s an easy bakery-style cake perfect for brunch, holidays, or St. Patrick’s Day desserts.
Prep Time 15 minutes
Cook Time 40 minutes
Total Time 55 minutes
Course Bread, Breakfast, Dessert
Cuisine Irish Inspired
Servings 9

Equipment

  • Hand Mixer or Stand Mixer
  • 8x8 or 9x9 baking pan
  • cooling rack
  • measuring cups and spoons

Ingredients
  

Coffee Cake Batter

  • 2 cups all-purpose flour
  • 1 teaspoon baking powder
  • ½ teaspoon baking soda
  • ½ teaspoon salt
  • ½ cup unsalted butter, softened
  • ¾ cup brown sugar
  • ¼ cup granulated sugar
  • 2 large eggs
  • ¾ cup sour cream
  • ½ cup strong brewed coffee (cooled)
  • 1 teaspoon vanilla extract

Cinnamon Streusel

  • ½ cup brown sugar
  • cup all-purpose flour
  • 1 teaspoon cinnamon
  • 4 tablespoon cold butter, cubed

Irish Cream Glaze

  • 1 cup powdered sugar
  • 3 tablespoon Irish cream liqueur I used Bailey's
  • 1 tablespoon milk or cream
  • ½ teaspoon vanilla extract

Instructions
 

1. Preheat the Oven

  • Preheat oven to 350°F.
  • Grease and line an 8x8 or 9x9 baking pan.

2. Make the Streusel

  • In a small bowl combine: flour, brown sugar, cinnamon.
  • Cut in the cold butter with a fork until crumbly. Set aside.

3. Mix the Dry Ingredients

  • In a bowl whisk together: flour, baking powder, baking soda, salt.

4. Make the Batter

  • In a large bowl beat butter, brown sugar, and granulated sugar until light and fluffy.
  • Add eggs one at a time.
  • Mix in: sour cream, brewed coffee, vanilla extract
  • Gradually mix in the dry ingredients until just combined.

5. Assemble the Cake

  • Spread half of the batter into the prepared pan.
  • Sprinkle half the streusel.
  • Add the remaining batter and top with the remaining streusel.

6. Bake

  • Bake for 35–40 minutes or until a toothpick inserted in the center comes out clean.
  • Cool completely before glazing.

7. Make the Irish Cream Glaze

  • Whisk together powdered sugar, Irish cream, milk, and vanilla until smooth.
  • Drizzle over cooled cake.

Notes

  • Adding a tablespoon of instant espresso powder to the batter intensifies the coffee flavor without making the cake bitter.
  • If your glaze is too thick, add ½ teaspoon milk at a time until drizzle consistency.
  • Lining your pan with parchment paper makes removing the cake clean and easy.
Keyword coffee crumb cake, Irish coffee cake, Irish cream coffee cake, St Patrick’s Day coffee cake