Prep the Ingredients: Add raisins and water to airtight container, seal, and set aside to rehydrate at room temperature for at least 30 minutes, up to 24 hours.Preheat oven to 350 degrees Fahrenheit. Grease and flour your cake pan, and set it aside.Use a box grater or food processor fitted with the shredding disc to grate the carrots, then spread them out onto a paper towel to soak up excess moisture. ½ cup raisins, ½ cup water, 3 large carrots
Brown the Butter: Add butter to a small skillet or saucepan (preferably with a light colored bottom) over medium heat, and allow it to melt. Cook the butter until it is golden brown with a toasted, nutty aroma (about 4-5 minutes), gently stirring every minute or so. Remove from heat and allow to cool to room temperature.
½ cup unsalted butter
Make the Batter: Use stand mixer or hand mixer to beat together the eggs and sugars until uniform. Add in browned butter, vanilla paste, and crushed pineapple, and stir until combined.
5 eggs, 1 cup brown sugar, ½ cup granulated sugar, 1 ½ teaspoon vanilla bean paste, ¾ cup crushed pineapple
In another bowl, whisk together the flour, baking powder, baking soda, cinnamon, salt, nutmeg, and ginger. Add in the walnuts, grated carrots, and drained raisins, and stir until they are coated in the flour mixture.*Coating the mix-ins in the flour mixture helps them distribute evenly through the cake batter. 2 ⅓ cups all-purpose flour, 2 teaspoons baking powder, 1 ½ teaspoon baking soda, 1 ½ teaspoon ground cinnamon, 1 teaspoon fine sea salt, ¾ teaspoon ground nutmeg, ¾ teaspoon ground ginger, 1 cup walnut pieces
Bake the Cake: Add flour mixture to the wet mixture and stir until just combined with no dry pockets remaining. Do not overmix the batter.Spread it into the prepared baking pan and transfer the pan to the upper rack of the preheated oven to bake for 25-28 minutes or until a toothpick inserted into the center of the cake comes out clean. Make the Frosting: While the cake cools, use a hand mixer or stand mixer fitted with the paddle attachment to beat the powdered sugar, cream cheese, butter, vanilla, and salt until smooth and fluffy (about five minutes). Chop the walnuts and set aside.Optional: Divide about ⅓ cup of the frosting into two smaller bowls and mix a few drops of green food coloring into one and orange food coloring into the other to achieve your desired shades. 2 cups powdered sugar, 6 ounces cream cheese, ¼ cup unsalted butter, 1 teaspoon vanilla bean paste, ½ teaspoon fine sea salt, orange food coloring, green food coloring, 1 cup walnuts
Decorate the Cake: Once fully cooled, turn the cake out of the pan, and spread the uncolored frosting all over the cake in an even, smooth layer. Gently press the chopped walnuts into the sides of the cake.Use piping bags or ziploc bags with the corners snipped off to little carrots on the top of the cake, then serve.