Preheat the oven to 350 degrees Fahrenheit. Grease two 9 inch cake pans and line them with parchment paper.
Puree 17 ounces frozen strawberries in a food processor or blender. Reserve 15 ounces of the strawberry puree for the cake and 2 ounces of the strawberry puree for the frosting.
In a large mixing bowl, whisk together 1 box white cake mix and 1 box strawberry Jell-O mix.
Add 15 ounces strawberry puree, 4 large eggs, ½ cup vegetable oil, and ¼ cup water. Mix with a hand held mixer until smooth and combined.
Pour the batter evenly into the prepared cake pans and bake for 20-25 minutes until a toothpick inserted into the center of the cakes comes out clean.
Let the cakes cool in the pan for approximately 10 minutes. Then remove the cakes from the pans and allow them to cool completely on a wire rack.
For the Frosting:
In a large mixing bowl, beat together ¼ cup softened butter and 1 package cream cheese until smooth and creamy.
Add the remaining 2 ounces strawberry puree and mix until combined.
Reduce the mixer speed to low and gradually add 7 cups powdered sugar, 1 cup at a time, until the frosting is smooth and combined.
Place one of the cakes on a serving plate. Top the cake with approximately 1/3 of the frosting.
Place the 2nd cake on top and use the remaining frosting to frost the sides and the top of the cake.
Refrigerate the cake until ready to serve.
Video
Notes
Recipe Tips
Prepare Pan - Make sure to grease pan before adding in cake mix batter.
Strawberries - For the best flavors blend the strawberries in a food processor.
Combining Ingredients - Continue beating until smooth with the hand mixer.
Baking Cake - Bake cake until toothpick inserted in center comes out clean.
Variation Ideas
Strawberry Extract - For more strawberry flavor, add in teaspoon strawberry extract.
Strawberry Cream Cheese Frosting - Make strawberry cream cheese frosting for amazing flavor.
How to Store LeftoversRefrigerate the leftovers in an airtight container for up to 1 week.