Line two 9-inch cake pans (or three 8-inch pans) with wax paper and preheat the oven to 350 degrees F.
In a large bowl, mix the cake mix with the Jell-O mix.
Stir in the oil, eggs, strawberries, and strawberry juice.
Divide the batter evenly among the prepared pans.
Bake in the preheated oven for 15-20 minutes, or until a toothpick comes out clean.
Remove from the oven and cool the layers completely on a wire rack.
Beat the confectioners’ sugar, butter, and berries together until smooth and creamy.
Frost the cooled cake.
