01 -
Preheat the oven to 175°C and grease a 23x33 cm baking pan with butter or cooking spray.
02 -
In a large bowl, mix the yellow cake mix, eggs, vegetable oil, and sour cream until smooth and well combined.
03 -
In a separate bowl, combine brown sugar, ground cinnamon, and chopped strawberries until evenly blended.
04 -
Pour half of the cake batter into the prepared pan, then sprinkle half of the strawberry cinnamon mixture over it. Repeat the layers with the remaining batter and strawberry mixture.
05 -
Use a knife to gently swirl the batter and strawberry mixture together to create a marbled pattern without overmixing.
06 -
Bake in the preheated oven for 35 to 40 minutes, or until a toothpick inserted in the center comes out clean.
07 -
While the cake bakes, whisk together the powdered sugar and heavy cream in a small bowl until smooth.
08 -
Allow the cake to cool slightly before drizzling the strawberry cream icing evenly over the top.
09 -
Slice and serve the cake warm or at room temperature. Enjoy with optional fresh strawberries or whipped cream.