01 -
Set oven temperature to 350°F and prepare a 9x13 inch pan by greasing or lining it with parchment paper.
02 -
In a large bowl, whisk together the melted unsalted butter and granulated sugar until fully blended.
03 -
Add eggs individually, whisking thoroughly after each addition, then stir in the vanilla extract.
04 -
Sift flour, cocoa powder, salt, and baking powder together.
05 -
Gradually fold the dry ingredients into the wet mixture until nearly combined; avoid overmixing.
06 -
Stir in the cooled brewed coffee and instant coffee granules gently to form a thick, glossy batter.
07 -
Pour batter into prepared pan, smooth the surface, and bake for 28 to 32 minutes until center is set but fudgy.
08 -
Allow brownies to cool fully in the pan before further handling.
09 -
Whisk powdered sugar, milk, and vanilla extract in a bowl until smooth. Add green gel food coloring until desired hue and thickness are achieved.
10 -
Cut brownies into squares. Drizzle each piece generously with the green glaze immediately before serving.