• Prepare the oven to set the temperature at 350 degrees Fahrenheit. Place the oven rack in the middle. Grease the baking pan with cooking spray or butter.
• Whisk together the baking powder, gluten-free flour blend, baking soda, nutmeg, cinnamon, cloves, salt and ginger in a separate bowl. Mix well until well combined. Tip 1: Gluten-free flour is heavier than wheat flour. It also tends to get more moisture. So it is important to add baking soda and baking powder so that the cake batter will have an extra lift needed for an acceptable and tender crumb.
• Shred the carrots in a food processor with a large shredding disk. After shredding, transfer the carrots to the bowl containing the flour blend. After wiping the food processor bowl, fit it with metal blade instead of the shredding disk. Tip 2: No carrots in the fridge? You can use zucchini instead. Zucchini is considered the best carrot substitute. But the flavor of this cake will be different a little bit.
• Add the brown sugar, granulated sugar, and flax eggs to the food processor bowl. Process it until all ingredients are thoroughly combined, and the mixture becomes frothy. This should take around 20 seconds. Tip 3: The use of brown sugar will make the cake crumb moist and tender, because it has more moisture compared to white sugar.
• While the processor is still running, add oil. Continue to process until the egg mixture is well emulsified. This should take another 20 seconds.
• Move this mixture to the bowl containing the carrots and flour blend mixture. With a rubber spatula, stir well the mixture until everything is well combined. You may also add nuts to the mixture.
• Pour the batter into the prepared pan. Bake it until the toothpick you placed in the center of the cake comes out clean. For a 9x13 inch baking pan, baking time should take around 30 to 35 minutes.
• Allow the cake to completely cool in the pan for about an hour. Then run a knife around its edges to loosen. Remove the cake and transfer to a serving platter. You can also frost it if you want. Top with walnuts.

Cream Cheese Frosting

• Combine all the ingredients in a bowl of food processor. Mix until all the ingredients are well combined and smooth.
• You can add in some milk to thin the frosting if you find it too thick. More powdered sugar, on the other hand, is needed if you find the frosting too thin.
• Refrigerate the mixture for 15 to 20 minutes. Remove from the bowl then whisk again so that it will be thick and sticky.