The Ultimate Brownie Loaf with Espresso Brown Butter Frosting

Steps

1. 1

   Preheat your oven to 350°F (180 °C) (175°C (350 °F)) and grease a standard bread loaf pan, or line it with parchment paper for easy removal.

2. 2

   In a microwave-safe bowl or over a double boiler, melt the butter and high-quality chocolate together until smooth. Set aside to cool slightly.

3. 3

   In a separate large mixing bowl, whisk together the eggs, egg yolk, granulated sugar, and brown sugar until the mixture is pale and slightly frothy.

4. 4

   Slowly pour the melted chocolate and butter mixture into the egg mixture, whisking constantly to combine without scrambling the eggs.

5. 5

   Gently fold in the all-purpose flour, cornstarch, and a portion of the espresso powder. Mix just until no dry streaks remain to maintain a fudgy texture.

6. 6

   Pour the batter into the prepared loaf pan and bake for 40-45 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs.

   Start 40-minute timer
7. 7

   While the loaf bakes, brown the butter for the frosting by heating it in a small saucepan over medium heat, stirring constantly until it smells nutty and golden brown bits form at the bottom. Transfer to a bowl to cool.

8. 8

   Prepare the frosting by beating the softened cream cheese, cooled brown butter, powdered sugar, and the remaining espresso powder until light and fluffy.

9. 9

   Spread the espresso frosting over the loaf while it is still slightly warm from the oven for a sensual, melty finish, or wait until completely cool for a thicker frosting layer.