Make a delicious birthday cake that both parents and kids will love! Cookbook author and culinary instructor Mark Scarbrough shares his recipe for a whole-grain(!) sour cream cake with zesty lemon curd buttercream. Watch as Mark demonstrates step by step how to make this layer cake all in the blender — no need for extra bowls. Mark offers his experience and advice along the way, including in what order to add the dry ingredients to ensure a moist and fluffy cake with a tender crumb.