How to Frost a Sheet Cake

A Note From feedfeed

Got frosting anxiety? We get it. Check out the video to see how we frost a massive sheet cake!

Start by placing a decent amount of frosting in the middle of the cake (more than you think!). Ideally, you want to work the frosting out to the edges of the cake from the center. Try to spread out the frosting by lifting your utensil as little as possible - when you're constantly picking up the spatula, (you can also use a large spoon) it can pick up pieces of the cake and spread crumbs throughout the frosting. Once you've got the frosting covering the cake, add any fancy swooshes or designs, and voila! You've got your beautifully frosted cake. 

Grab the full recipe for this Whole Wheat Carrot Cake with Maple Cream Cheese Frosting below!

Prep time 15hrs
Cook time 60hrs
Serves or Makes: 10

Recipe Card

For the Carrot Sheet Cake


  • 2 cups whole wheat flour
  • 1/2 teaspoon baking soda
  • 2 teaspoons baking powder
  • 1/4 teaspoon ground nutmeg
  • 1 teaspoon ground ginger
  • 1 tablespoon ground cinnamon
  • 1/2 teaspoon salt
  • 1 1/2 cups sugar
  • 4 eggs
  • 1 1/2 cups vegetable oil
  • 2 teaspoons vanilla extract
  • 1/2 cup unsweetened applesauce
  • 3 cups finely grated carrots (from about 6 large carrots)
  • 1 cup toasted walnuts, chopped
  • 1 cup unsweetened shredded coconut
  • 3/4 cup raisins

For the Maple Cream Cheese Frosting


  • 1 (8 ounce) block cream cheese, softened
  • 1/4 cup unsalted butter, softened
  • 1 1/2 cups confectioner's sugar, sifted
  • 1/4 cup maple syrup
  • 1 teaspoon ground cinnamon
  • 1 teaspoon vanilla extract

For the Rainbow Carrot Roses (Optional, for Decoration)


  • 3 to 4 rainbow carrots, with tops


  • Step 1

    Preheat the oven to 350˚F and grease a 9x13 inch baking dish with butter or nonstick cooking spray.

  • Step 2

    In a large bowl, whisk together the flour, baking soda, baking powder, spices and salt. In a separate medium-sized bowl, whisk together the sugar, eggs, oil, vanilla and applesauce.

  • Step 3

    Fold the wet ingredients into the dry ingredients and stir until well incorporated. Add the carrots, coconut, walnuts and raisins and fold until incorporated. Add the batter to the prepared pan and bake for 50-60 minutes, or until a cake tester inserted into the middle of the cake comes out clean. When the cake is done, run a knife around the side of the pan to help it cool. Let cool completely while you make the frosting.

  • Step 4

    In the bowl of a stand mixer fit with the paddle attachment or in a large bowl with a hand mixer, blend the cream cheese and butter until smooth, about 2-3 minutes. Scrape down the bowl and add the sugar, maple syrup, cinnamon and vanilla extract. Whip until well combined and the mix starts to look light and fluffy.

  • Step 5

    Add cream cheese frosting to the cooled cake. Set aside while you make your carrot roses.

  • Step 6

    To make the carrot roses, peel the carrots and reserve some of the tops. Rinse the tops with cold water, then set aside to dry. Peel the rainbow carrots into thick strips with a y-peeler. Add strips to a microwave safe plate and cook for about 1-2 minutes, or until the strips soften slightly.

  • Step 7

    Starting at one end, roll the carrot strips up tightly, forming a rose. Set aside while you repeat the process with the remaining strips.

  • Step 8

    Add carrot roses to the top of the frosted cake, and accent with reserved carrot tops (to look like leaves) if desired.