"Create a vegan carrot cake recipe card based on the following details, using imperial units and keeping it gluten-free with King Arthur Measure for Measure Gluten Free Flour as the option: yield 1 three-layer 8-inch cake or 1 9x9 cake; oven 350 F; ingredients include grated carrots, vegan buttermilk, gluten-free 1:1 flour, baking powder, baking soda, cinnamon, ginger, nutmeg, cardamom, sea salt, granulated sugar, light brown sugar, neutral oil, dairy-free yogurt, vanilla extract, and vegan cream cheese frosting. Include clear instructions for cake and frosting, optional add-ins (walnuts, raisins, pecans), and storage notes. Make it polished as a recipe card."