Preheat oven to 350°F and spray 9x13 baking dish with nonstick cooking spray.
Melt butter and stir in cocoa powder.
¾ cup cocoa powder, 1 cup unsalted butter*
While butter mixture is cooling, in a small bowl combine the flour, baking powder, and salt. Set aside.
1 cup all purpose flour, ½ teaspoon baking powder, ¼ teaspoon salt
In a stand mixer mix together the butter mixture (it’s okay if it’s still warm) and the sugar. Stir in the espresso powder now if using.
2 cups sugar, 1 teaspoon espresso powder
Add the eggs one at a time, letting each egg become fully incorporated into the batter before adding the next. Once the eggs are all added, mix in the vanilla.
4 large eggs, 1 teaspoon vanilla
By hand, with a large rubber spatula or mixing spoon, fold in the flour mixture. Folding in the flour will help the brownie batter keep the air in it.
Fold in the chocolate chips.
1 cup chocolate milk chocolate chips
Pour into the prepared baking dish and bake for 25-30 minutes or until a toothpick comes out clean.
Let cool completely before cutting (if you can!).
Video
Notes
Tips and Tricks
You can use unsweetened baking chocolate instead of cocoa powder. Simply chop 4oz of unsweetened chocolate and melt with ¾ cup butter (instead of using 1 cup). Mix with batter and proceed with recipe.
*Want to make these dairy free- you can use coconut oil instead of butter!