Preheat the oven to 350℉. Spray two 8-inch cake pans with baking nonstick spray. Line the bottoms with 8-inch parchment paper circles. Spray again.
First, grate the peeled carrots. Use the smallest hole in your grater. It should be a packed 2 1/2 cups of grated carrots.
2 1/2 cups Grated carrots
In a large bowl, mix the flour, cornstarch, baking powder, baking soda, salt, cinnamon, nutmeg, and ginger. Set aside.
3 1/4 cup All purpose flour, 1/4 cup Cornstarch, 2 tsp Baking powder, 1 tsp Baking soda, 1 tsp Salt, 1 TBSP Ground cinnamon, 1/4 tsp Ground nutmeg, 1 tsp Ground ginger
In a separate bowl, mix the oil, brown sugar, sugar, sour cream, buttermilk, grated carrots, eggs, and vanilla. Mix until combined.
1 cup Oil, 1 cup Brown sugar , 1/2 cup White granulated sugar, 1/2 cup Sour cream , 1/2 cup Buttermilk, 4 Large eggs, 1 tsp Pure vanilla extract
Pour the wet ingredients on top of the dry ingredients. Mix until smooth.
Pour the cake batter evenly into the two cake pans. Bake for 22-25 minute. Bake until a toothpick inserted comes out clean.
Let the cake sit in the hot pans for 10 minutes before transferring to a cooling rack. Cool completely before decorating.