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Delicious Tiramisu Blondie topped with mascarpone frosting and cocoa powder.

Tiramisu Blondies

These irresistibly easy tiramisu blondies capture the rich flavors of traditional tiramisu in a simple, one-bowl recipe that's perfect for any occasion.
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Prep Time 10 minutes
Cook Time 25 minutes
Total Time 35 minutes
Servings: 16 squares
Course: Dessert, Snack
Cuisine: American, Italian
Calories: 150
Ingredients Method Notes

Ingredients
  

Blondie Base
  • 1 cup packed brown sugar
  • 1 stick unsalted butter, melted and slightly cooled
  • 1 large egg, room temperature
  • 1 teaspoon vanilla extract
  • 2 tablespoons strong espresso or coffee, cooled
  • 1 cup all-purpose flour
  • 1 teaspoon baking powder
  • 1 pinch fine salt
Mascarpone Swirl
  • 4 ounces mascarpone
  • 2 tablespoons powdered sugar
  • 1 teaspoon espresso or coffee
  • 1 tiny pinch salt
Finish
  • 1 tablespoon unsweetened cocoa powder for dusting
  • 1 teaspoon dark rum (optional) Mix into the batter or the swirl for a grown-up twist.

Method
 

Preparation
  1. Heat oven to 350°F. Line an 8-inch square pan with parchment and lightly grease.
  2. Whisk melted butter and brown sugar until smooth and glossy. Add egg, vanilla, and espresso, and whisk again.
  3. Fold in flour, baking powder, and salt just until combined. Do not overmix.
  4. Make the swirl by stirring mascarpone, powdered sugar, espresso, and a tiny pinch of salt until smooth.
  5. Spread blondie batter into the pan. Spoon the mascarpone mixture in 6 to 8 dollops across the top and drag a butter knife through to create swirls.
Baking
  1. Bake for 22 to 26 minutes, until the edges are golden and the center no longer looks wet. A toothpick should come out with a few damp crumbs.
  2. Cool in the pan. Dust with cocoa and slice into squares.
  3. For the cleanest cuts, chill in the fridge for 30 minutes first.

Notes

These blondies are even better the next day after an overnight chill. Flavors settle and the texture gets fudgy. Serve with vanilla ice cream or chilled with whipped cream and chocolate shavings for a crowd-pleasing dessert.