01 -
Preheat the oven to 175°C. Grease and flour a 23 x 33 cm baking pan to prevent sticking.
02 -
In a large bowl, blend vanilla cake mix, eggs, sour cream, vegetable oil, and vanilla extract until a smooth batter forms.
03 -
In a separate small bowl, combine brown sugar and ground cinnamon until evenly mixed.
04 -
Spread half the cake batter into the prepared baking pan. Sprinkle half of the cinnamon-sugar mixture over the batter, followed by even distribution of diced strawberries. Top with remaining batter and finish with the rest of the cinnamon-sugar mixture.
05 -
Transfer the pan to the preheated oven and bake for 30–35 minutes. Check doneness by inserting a toothpick in the center; it should come out clean.
06 -
While the cake is baking, whisk powdered sugar, milk, strawberry puree, and vanilla extract until a smooth, pourable icing forms. Add extra milk if a thinner consistency is desired.
07 -
Remove cake from the oven and let cool in the pan for 10–15 minutes. Drizzle icing evenly over the warm cake and allow to cool completely before slicing.
08 -
Cut the cooled cake into portions and serve.