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Triple Berry Sheet Cake on white plate
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Triple Berry Sheet Cake

This Triple Berry Sheet Cake is such a delicious and simple cake that you will want to make it all the time. This cake is perfect for get togethers, summer picnics, or an easy summer afternoon treat. With a Cool Whip frosting and fruit, this cake is light and airy and perfect anytime.
Prep Time15 mins
Cook Time35 mins
Course: Dessert
Cuisine: American
Keyword: triple berry sheet cake
Servings: 12
Author: Jill


  • 2 boxes yellow cake mix
  • 2 Cup water
  • 1 Cup canola oil
  • 6 eggs
  • Strawberry Jelly
  • 2 cool whip tubs
  • Blackberries and strawberries chopped for topping
  • Raspberries and blueberries for topping


  • Preheat oven to 350 degrees
  • Using a flour based pam spray, spray a 9x13 baking dish then set aside
  • In a stand mixer or a large bowl with a hand mixer; mix the cake mix,
  • water, canola oil and eggs together until combined
  • Pour batter into the prepared baking dish
  • Bake for 28-35 minutes; or until a toothpick or knife comes out clean
  • Use any utensil with a rounded end to poke holes in the cake
  • Set aside to cool down
  • While the cake is cooling chop up the blackberries and strawberries, set aside
  • Once the cake is cooled; grab a squeeze bottle and pipe in the strawberry jam into the holes
  • Place the cake in the fridge for 5 minutes (That way when you begin to frost the cake your jam won’t smear!!)
  • Frost the top with the cool whip until cake is covered; top the cake off with your berries
  • Cut to serve and enjoy!!!