Frosted Fudge Brownies

Preheat the oven to 350°F. Line a 9x13-inch baking pan with parchment paper or grease it lightly.

Combine the unsweetened baking chocolate and butter in a heatproof bowl. Place over a pot of gently simmering water (double boiler method) and stir until completely melted and smooth.

Remove the melted chocolate mixture from heat and let cool for 2-3 minutes. Whisk in the sugar until well combined.

Add the eggs one at a time to the chocolate mixture, whisking thoroughly after each addition. Stir in the vanilla extract.

Fold in the chopped walnuts until evenly distributed throughout the batter.

Pour the batter into the prepared baking pan and smooth the top with a spatula.

Bake in the preheated 350°F oven for 30-35 minutes, until a toothpick inserted in the center comes out with a few moist crumbs but not wet batter.

Remove the brownies from the oven and allow them to cool completely in the pan on a wire rack before frosting.