Although I wouldn’t use Greek yogurt frosting on every cupcake, it is a nice option if you want a frosting without all the fat of butter. Sift or whisk together dry ingredients (flour, sugar, cocoa powder, baking powder, baking soda, and salt). Greek yogurt frosting has a yogurt tang, but like many of the flavors of FroYo (frozen yogurt), the tang plus a little bit of sweetness works like a charm. Preheat the oven to 350ºF and grease one 9" round cake pan. Use a whole milk greek yogurt for Chocolate Yogurt Cake. There is less oil and no butter in this cake so you want the extra fat to make your cake super moist. Frosting 1 cup TCHO Bittersweet 66% Dark Chocolate Discs 1/2 cup Greek yogurt 1 teaspoon vanilla extract. There is less oil and no butter in this cake so you want the extra fat to make your cake super moist. Ingredients Cake.