Step 1

Preheat your oven to 350°F, and grease a 13x9-inch baking dish. Spread the strawberry pie filling all over the bottom of the dish.

Step 2

Next, sprinkle the cake mix evenly over the top. Resist the urge to stir it all together.

Step 3

Line the top evenly with the cold, cubed butter. The butter will spread as it melts and bake into the cake mix.

Step 4

Bake until the filling is bubbly and the top is golden brown, 45 to 60 minutes. Scoop out a serving while the cake is still warm, and top it with fresh strawberries and whipped cream, if desired.