Make a 5 Layer Earth Cake to celebrate Earth Day! Vanilla, Cookies & Cream, Walnut, Carrot, and Chocolate cake layers make up this tasty terrain! Makes 5 cakes Things you'll need Vanilla AND Cookies & Cream Cakes Makes 2 different cakes 2 cups crushed chocolate sandwich cookies (Oreos) 1½ cups sugar 2 cups all purpose flour ¾ cup + 2 tablespoons whole milk ¼ cup vegetable shortening ½ cup salted butter 2 teaspoons baking powder ¼ teaspoon salt 5 egg whites 2 teaspoons vanilla extract ¼…