Triple Chocolate Brownies bring layers of chocolate flavor with cocoa, chips, and a rich, fudgy center that melts in your mouth straight from the warm, chocolatey pan.
Preheat the oven to 325 degrees Fahrenheit (165 degrees Celsius). Line a 9×13-inch pan with parchment or foil, and set aside.
In a large double boiler, melt the butter, then add the espresso powder, mixing to dissolve. Add the sugar and cook until the mixture becomes smooth and glossy. Remove from the heat and allow the mixture to cool for 20 minutes.
In the bowl of a stand mixer, combine the cooled butter mixture and vanilla. (Slightly warm is okay—it shouldn't be hot.) With the mixing speed on low, add one egg at a time, mixing only until incorporated.
In a medium-sized mixing bowl, whisk together the flour, cocoa powder, baking soda, and salt. With the mixing speed on low, gradually add the dry ingredients. Mix until no flour pockets remain. Remove the bowl from the stand and fold in the three kinds of chocolate chips.
Spread the brownie batter evenly into the prepared pan. Place in the oven and bake for 25–30 minutes, or until the brownies are set. Remove from the oven and allow to cool for 45 minutes before cutting and serving.
Notes
-This recipe is for a 9×13 pan. To make a smaller batch, halve the ingredients and bake in an 8×8 square pan for the same amount of time.To STORE your Chocolate Chip Brownies, let them cool completely before cutting. Keep them in an airtight container at room temperature for up to 4 days—they stay moist and flavorful. For longer storage, refrigerate them for up to a week, though the texture may firm up slightly. If you'd like to FREEZE them, wrap each square individually in plastic wrap, then store in a freezer-safe container or bag for up to 3 months. When ready to enjoy, thaw at room temperature or REHEAT them briefly in the microwave for a melty treat.