#### **Step 1: Preheat & Prepare the Pan**
Preheat oven to 350°F (175°C).
Line an 8x8-inch baking pan with parchment paper and grease lightly.
#### **Step 2: Melt the Chocolate & Butter**
In a microwave-safe bowl, melt butter and chopped dark chocolate in 20-second intervals, stirring until smooth.
Whisk in granulated and brown sugar until combined.
#### **Step 3: Mix the Wet Ingredients**
Add eggs one at a time, whisking well after each addition.
Stir in vanilla extract and espresso powder.
#### **Step 4: Combine Dry Ingredients**
In a separate bowl, sift together flour, cocoa powder, salt, and baking powder.
Gradually fold the dry ingredients into the wet mixture until just combined.
#### **Step 5: Bake the Brownies**
Pour the batter into the prepared pan and spread evenly.
Bake for 22-25 minutes, or until a toothpick inserted in the center comes out with a few moist crumbs.
Let brownies cool completely before slicing.
#### **Step 6: Prepare the Espresso Glaze (Optional)**
In a small bowl, whisk together powdered sugar, espresso powder, and milk until smooth.
Drizzle over cooled brownies for an extra coffee kick.
#### **Step 7: Serve & Enjoy**
- Slice into squares and serve with a scoop of vanilla ice cream or a hot cup of coffee.