Step 1

Preheat oven to 350°F. Lightly grease an 8×8-inch baking dish or pan with non-stick cooking spray and set aside.

Step 2

Place the butter and chocolate chips in a large microwave-safe bowl. Heat in the microwave for about 2 minutes, stirring every 30 seconds, until the chocolate chips are melted and smooth. Remove from microwave. Whisk in the sugar then the eggs one at a time until batter is smooth. Add the cocoa powder and stir until well incorporated.

Step 3

Spread the batter evenly into the prepared baking dish. Bake for 25-30 minutes or until a toothpick inserted in the center comes out clean. Let cool completely in pan.