Take those boxed brownies to a new level with just a few added ingredients. Don't tell though. It's your little secret to incredible tasting brownies.
2 large eggs
1 stick unsalted butter, melted, 1/2 c.
1/3 c. buttermilk or milk
18.3 or 18.4 oz. brownie mix
1/4 c. cocoa powder
1 t. espresso powder, makes chocolate flavor richer, the brownies will NOT taste like coffee (or 1/4 c. brewed coffee or 1 1/2 t. instant coffee in place of espresso powder)
Maldon flaky sea salt, for optional serving
Preheat the oven to 350 degrees F.
Line an 8×8 inch baking pan with parchment paper, overlapping the sides to lift baked brownies out; spray with non-stick cooking spray; set aside.
In a mixing bowl, combine the eggs, melted butter, buttermilk, brownie mix, cocoa powder and espresso powder; beat with an electric mixer on low until combined, about 1 minute.
Pour batter into the prepared pan; spread evenly with a spatula.
Bake 37-40 minutes or until a wooden toothpick inserted in the center comes out clean.
Allow the brownies to cool in the pan. Remove the brownies from the pan using the parchment paper to lift out. If desired, finish with a generous sprinkling of flaky Maldon sea salt.
Serve.
12 servings.
*The brownies can be baked in an 9×13 inch pan for 25-32 minutes, but the brownies won't be as thick.