Preheat oven to 350℉. Line an 8"x 8" or 9"x 9" pan with parchment paper, set aside.

In a glass measuring cup, heat water in the microwave until boiling. Add in espresso powder and stir until combined. Set aside.

In a heavy, medium-sized saucepan, melt butter. Add sugars and chocolate chips. Stir until combined.

Add in espresso. Stir to combine.

Remove from heat. Add the vanilla extract. Add eggs, one at a time, stirring well after each addition.

Add in cocoa powder, flour, salt, and baking powder and stir with a large spatula just until no streaks of dry ingredients appear.

Pour brownie batter into the prepared baking pan and spread it into an even layer.

Bake for 35-40 minutes or until a toothpick inserted into the center of the brownies comes out with moist crumbs clinging to it.

Transfer the pan to a wire rack and cool completely before cutting and serving.