Whisk together flour, cocoa powder, baking soda, and baking powder. Set aside.
In a large bowl beat sugar and oil together, then add in eggs, Greek yogurt, and milk, beat until evenly blended. Add flour mixture and beat until combined.
Pour into prepared cake pans, and bake for 30 minutes or until a toothpick comes out clean.
Remove from oven, cool, and turn out onto a cooling tray.