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Strawberry Sheet Cake

Strawberry Sheet Cake with fresh Strawberry Buttercream Frosting has so much strawberry flavor and it is  a cinch to make with a box of white cake mix. The cake itself gets its strawberry flavor from fresh strawberry puree and a box of strawberry gelatin.

Slice of Strawberry Sheet Cake on a plate with a fresh strawberry.


The frosting is a creamy buttercream made with fresh strawberry puree that’s been reduced to thicken it and concentrate the flavors.

Strawberry flavored sheet cake cut into squares in a baking pan.


We live right next to a strawberry farm so I have no excuse not to make lots and lots of fresh strawberry desserts. Strawberry Shortcake, Strawberry Lasagna, and Strawberry Fritters are just a few of my favorites.

Sheet cake cut into squares in pan. Each one topped with a strawberry.


This Strawberry Sheet Cake is up there with my very favorite strawberry recipes. It’s unbelievably light, tender, and moist and absolutely bursting with strawberry flavor. It’s easy to cut into squares for a potluck or picnic. I like to decorate each slice with a strawberry half. Such a pretty spring dessert!




Frozen strawberries can be used instead of fresh. Thaw them in a colander so that any excess liquid drains away.


Sharing this recipe with The Weekend Potluck. Stop by for lots of great recipe ideas!

Strawberry Sheet Cake with one piecce taken out of the middle.

Try These Other Amazing Strawberry Recipes:

Slice of Strawberry Sheet Cake on a plate with a fresh strawberry.

Strawberry Sheet Cake

Strawberry Sheet Cake is bursting with strawberry flavor and covered in a thick layer of fresh strawberry buttercream.
PREP: 15 minutes
COOK: 30 minutes
TOTAL: 45 minutes


  • 2 heaping cups sliced fresh strawberries
  • 1 (16.5-ounce) box white cake mix
  • 3 large eggs
  • 3/4 cup vegetable oil
  • 1 (3-ounce) package strawberry gelatin

Strawberry Frosting

  • 2 cups sliced strawberries
  • 1 cup butter, softened
  • 3 cups confectioners' sugar
  • 1 teaspoon vanilla extract


  • Lightly spray a 9x13-inch pan with cooking spray and preheat oven to 350 degrees.
  • Place 2 cups of strawberries in a blender or food processor and process until very finely chopped. Measure out 1 cup.
  • Add cake mix, eggs, and vegetable oil to a mixing bowl. Use a hand mixer or stand mixer to mix well.
  • Mix in the 1 cup of strawberry puree and the (dry) strawberry gelatin.
  • Pour batter into prepared pan and bake for 30 to 35 minutes or until a wooden pick inserted in the center comes out clean. Let cool.
  • Make frosting. Process the remaining 2 cups strawberries in a blender or food processor until smooth. If you had leftover strawberries from making the cake batter, you can combine them.
  • Place strawberry puree in a small saucepan and bring to a simmer. Cook, stirring occasionally until thickened. You should have about 1/3 a cup. Let cool completely.
  • Use an electric mixer to beat butter until creamy.
  • Beat in 1 cup of sugar and then half of the 1/3 cup of reduced strawberry puree.
  • Beat in vanilla extract.
  • Beat in another cup of confectioners' sugar and remaining puree.
  • Beat in final cup of confectioners' sugar. Spread frosting on cooled cake.


Calories: 426kcal
Author: Christin Mahrlig
Course: Dessert
Cuisine: Southern
Keyword: Sheet Cake, Spring

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Originally published May 15, 2017.

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35 thoughts on “Strawberry Sheet Cake”

  1. was wondering if you could make a white cake from scratch and add the strawberries and the strawberry jello. would like to make but not with a cake mix if I don’t have to.

  2. Delicious cake. Very easy to make. Great flavor with real strawberries. Have made it several times.

  3. I haven’t made this cake yet but I’m sure I will. This really isn’t a sheet cake though, as the name implies. A sheet cake is made in a sheet cake pan, which is larger, and the cake would be much thinner. I’m not sure this recipe would have enough batter for a sheet cake pan. Otherwise, it sounds good.

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