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A slice of coconut sheet cake on a spatula is placed on a white dessert plate.
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Easy Coconut Sheet Cake

This easy dessert starts with a boxed cake mix and ends with a moist, delicious, melt-in-your-mouth coconut cake!
Prep Time 10 minutes
Cook Time 40 minutes
Total Time 50 minutes
Servings 15

Ingredients

For the cake:

  • 1 (15.25 ounce) box white cake mix I used Duncan Hines
  • 1 (3.4 ounce) package instant coconut cream pudding mix
  • 4 large egg whites * room temperature
  • ¾ cup sour cream room temperature
  • ¾ cup vegetable oil
  • ½ cup water
  • 2 teaspoons coconut extract

For the frosting:

  • 8 ounces cream cheese softened
  • ½ cup butter softened
  • 3 ¼ cups powdered sugar
  • 1 teaspoon coconut extract
  • 1 cup sweetened flaked coconut

Instructions

  • Preheat your oven to 350 degrees F.  Grease or liberally spray a 13x9 pan with cooking spray.
  • Beat together cake mix, pudding mix, egg whites, sour cream, vegetable oil, water and 2 teaspoons coconut extract with a hand mixer on medium speed (or with a stand mixer using the paddle attachment).  Beat until smooth (about 2 minutes).
  • Pour batter into prepared pan and spread evenly.
  • Bake for 30 to 40 minutes (my cake was ready in 35 minutes using a glass pan), or until a toothpick inserted in the center is removed clean.
  • Allow cake to cool.  While cake is cooling, prepare the frosting by beating cream cheese and butter in a large bowl with a hand mixer (or a stand mixer) until smooth.  Slowly add powdered sugar, while continuing to beat until smooth.  Add 1 teaspoon coconut extract and mix until combined.
  • Spread frosting over cooled cake and sprinkle evenly with coconut flakes.

Notes

  • *3 large eggs can be used in place of the 4 egg whites
  • Store in an airtight container in the fridge for up to 5 days.