Your guests will never know this is gluten-free and made with cooked quinoa instead of flour. This cake could be served simply with cocoa powder dusted on top or for more panache add the chocolate whipped cream and ganache frostings. Note: The step for cooking the quinoa will produce more than needed, so be sure to measure the 2 cups you need before adding to the other ingredients. To measure the cooked quinoa, loosely scoop it and level with the back of a knife. You don't want to pack it.