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Preheat your oven to 350°F (175°C). Line an 8x8 inch square baking pan with parchment paper, leaving an overhang on two sides to easily lift the brownies out later.

In a large bowl, whisk together the melted unsalted butter, granulated sugar, and light brown sugar until well combined and smooth.

Beat in the large eggs one at a time, ensuring each egg is fully incorporated before adding the next. Stir in the vanilla extract.

In a separate medium bowl, whisk together the all-purpose flour, unsweetened cocoa powder, espresso powder, and salt.

Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Be careful not to overmix. Fold in the dark chocolate chips.

Pour the thick brownie batter into the prepared baking pan. Use a spatula to evenly spread the batter across the pan.

Sprinkle the chopped dark chocolate bar pieces evenly over the top of the brownie batter.

Bake for 25-30 minutes, or until a toothpick inserted into the center comes out with moist crumbs, but not wet batter. The edges should be set and the top should have a crackly appearance.

Remove the pan from the oven. While the brownies are still warm, sprinkle the flaky sea salt over the crackly top.

Allow the brownies to cool completely in the pan on a wire rack for at least 1 hour before lifting them out using the parchment paper overhang. This helps them set and become fudgy.

Cut the cooled brownies into 9 squares and serve. These are delicious warm, so feel free to gently reheat a square for a few seconds in the microwave if desired.


Preheat your oven to 350°F (175°C). Line an 8x8 inch square baking pan with parchment paper, leaving an overhang on two sides to easily lift the brownies out later.

In a large bowl, whisk together the melted unsalted butter, granulated sugar, and light brown sugar until well combined and smooth.

Beat in the large eggs one at a time, ensuring each egg is fully incorporated before adding the next. Stir in the vanilla extract.

In a separate medium bowl, whisk together the all-purpose flour, unsweetened cocoa powder, espresso powder, and salt.

Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Be careful not to overmix. Fold in the dark chocolate chips.

Pour the thick brownie batter into the prepared baking pan. Use a spatula to evenly spread the batter across the pan.

Sprinkle the chopped dark chocolate bar pieces evenly over the top of the brownie batter.

Bake for 25-30 minutes, or until a toothpick inserted into the center comes out with moist crumbs, but not wet batter. The edges should be set and the top should have a crackly appearance.

Remove the pan from the oven. While the brownies are still warm, sprinkle the flaky sea salt over the crackly top.

Allow the brownies to cool completely in the pan on a wire rack for at least 1 hour before lifting them out using the parchment paper overhang. This helps them set and become fudgy.

Cut the cooled brownies into 9 squares and serve. These are delicious warm, so feel free to gently reheat a square for a few seconds in the microwave if desired.
