Brown the butter

• Melt the butter in a saucepan over low heat.
• Cook until it turns a golden brown color and smells toasted.

Bloom the cocoa

• Pour the brown butter into a bowl with the cocoa powder.
• Whisk until smooth so the cocoa blooms and gains flavor and depth.

Whisk the eggs and sugar

• In a separate bowl, combine the eggs with the light brown sugar.
• Whisk until the mixture is super fluffy and you can barely feel any sugar granules between your fingers.

Combine the wet mixtures

• Add the chocolate mixture to the whipped eggs and sugar.
• Add the vanilla and salt.
• Mix everything together.

Add the dry ingredients and chocolate

• Add the flour and mix until just combined.
• Fold in the chocolate chips.

Bake

• Pour the batter into a baking dish.
• Bake at 350°F until set.