Mocha Fudge Brownie

Name: Mocha Fudge Brownie
Prep time: 10 min
Cook time: 30 min
Total time: 40 min
Cuisine: American
Ingredients: 1 cup flour; Half a teaspoon of baking powder; Half a teaspoon of salt; half cup Unsweetened Cocoa powder (43g); 3 packets of espresso powder; 107 g unsalted butter; 3 tbsp vegetable Oil; 1.5 cup of granulated sugar (300g); 2 eggs large plus 1 yolk; 3/4 cup chocolate chips (128g)