Name: Golden Sponge Cake with Creamy Filling
Prep time: 15 min
Cook time: 25 min
Yield: 12
Cuisine: American
Ingredients: 1 box yellow cake mix (recommended: Betty Crocker); 5 tbsps plain flour; 250ml milk; 200g sugar; 1/2 tsp salt; 110g vegetable shortening (recommended: Trex); 110g butter, softened; 1 tsp vanilla extract; Icing sugar and mint, for garnish