What makes these box brownies better than the rest? It starts with a few notable additions, like brewed coffee, instant espresso, and melted butter. These brownies taste rich, fudgy, and utterly delicious. They are the BEST brownies. You would never know that they started with a boxed brownie mix.
Preheat the oven to 325° F. Grease and line an 8-inch square baking pan with parchment paper.
Mix the brewed coffee, melted butter, egg yolks, and vanilla extract until combined. Whisk in the instant espresso or coffee until dissolved.
Using a rubber spatula, fold the brownie mix into the liquid ingredients. Fold in the chocolate chips. Reserve a few extra chips to sprinkle on the batter once it is in the pan.
Transfer the batter to the prepared pan. Smooth it into an even layer.
Bake the brownies for 40-45 minutes or until the brownies are set. (These brownies are very fudgy, so a toothpick inserted into the center may not come out clean.)
Allow the brownies to cool before slicing.
Notes
TO STORE - Store brownies in an airtight container or zip-top bag. Store at room temperature for up to five days or in the refrigerator for up to one week.
TO FREEZE - Transfer cooled brownies to a freezer-safe zip-top —separate layers with a sheet of wax paper. Freeze for up to 3 months.
FOR THE CLEANEST SLICES - Refrigerate the brownies for one hour before cutting.