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Slice of strawberry slab cake with cream cheese frosting topped with fresh strawberries on a plate with a fork and milk in the background.
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Strawberry Slab Cake

A soft and easy strawberry slab cake made in a 9x13 pan. This simple cake is perfect for spring, sharing, or keeping on hand for a homemade treat.
Course Dessert, Snack
Cuisine American
Keyword Strawberry Slab Cake
Prep Time 20 minutes
Cook Time 45 minutes
Total Time 1 hour 5 minutes
Servings 15

Ingredients

Strawberry Cake

  • 1 cup vegetable oil
  • 2 cups granulated sugar
  • 2 teaspoons vanilla extract divided
  • 2 tablespoons strawberry jello mix or 2–3 tablespoons powdered freeze dried strawberries
  • 2 large eggs
  • 2 ½ cups all purpose flour
  • ½ teaspoon baking soda
  • 1 teaspoon baking powder
  • ½ teaspoon salt
  • 1 cup buttermilk
  • 1 cup fresh strawberries divided

Strawberry Cream Cheese Frosting

  • ¼ cup unsalted butter softened
  • 4 ounces cream cheese softened
  • 3 cups powdered sugar

Instructions

Step 1 Prepare the Pan and Oven

  • Preheat your oven to 350°F. Spray a 9x13 baking dish with nonstick spray and set aside.

Step 2 Mix the Wet Ingredients

  • In a large mixing bowl, whisk together the vegetable oil, sugar, 1 teaspoon of the vanilla extract, strawberry jello mix, and eggs until well combined.

Step 3 Combine the Dry Ingredients

  • In a separate bowl, whisk together the flour, baking soda, baking powder, and salt.
    Mixing dry ingredients for strawberry slab cake in a bowl with a whisk.

Step 4 Combine Batter and Strawberries

  • Chop about 1 cup of the fresh strawberries into small pieces. Begin adding the dry ingredients to the wet ingredients, alternating with the buttermilk. Gently fold until just combined, then fold in the strawberries.
    A strawberry slab cake batter mixed in a bowl with fresh strawberries visible.

Step 5 Bake the Cake

  • Pour the batter into your prepared baking dish and spread evenly. Bake for 40 to 45 minutes, or until a toothpick inserted into the center comes out clean. Allow the cake to cool completely before frosting.

Step 6 Make the Frosting

  • Take the remaining strawberries, remove the stems, and mash them or blend into a puree. In a medium bowl, beat together the butter and cream cheese until smooth. Add the remaining vanilla and strawberry puree and mix well. Add the powdered sugar one cup at a time, mixing until smooth.
    Smooth strawberry cream cheese frosting in a mixing bowl.

Step 7 Frost and Serve

  • Spread the frosting evenly over the cooled cake. Top with fresh strawberries if desired before serving.
    Close up of strawberry slab cake slice with cream cheese frosting and fresh strawberries.

Notes

  • This cake freezes well for up to 2 months when wrapped tightly.
  • Thaw in the refrigerator and keep refrigerated after frosting.
  • About 1 cup of strawberries is roughly 8 to 12 medium berries.