Triple Chocolate Sheet Cake with Fudge Frosting! Yes, please! Sheet cakes are the easiest of easy and there is just something so delightful about them! They’re fun to decorate, too! 1 1/2 cup all purpose flour 1 1/4 cup granulated sugar 6 tablespoons unsweetened cocoa powder 1/2 tablespoon instant expresso powder 1 teaspoon baking soda 3/4 teaspoon baking powder 1/4 teaspoon salt 1/2 cup of your favorite oil 1 large egg + the white of another 1/2 cup buttermilk 1/4 coarsly chopped semi sweet chocolate 1 cup hot coffee (strong) Preheat the oven to 350 F. Grease and line your pan with parchment paper. I used a 6x10x2 ceramic pan. In a large bowl, sift together the all purpose flour, sugar, unsweetened cocoa powder, baking soda, baking powder, espresso powder and salt. Set aside. To the bowl of your stand mixer add the oil, eggs, and buttermilk. Mix until completely incorporated. Add in the chopped chocolate. Slowly add in half the dry ingredients. Stop to scrap the side and bottom ...