Ingredients
For the Cake:
- 1 box white cake mix (or vanilla)
- 1 cup water
- ⅓ cup vegetable oil
- 4 egg whites
- 1 tbsp lemon zest
- 1 tbsp lemon juice
For the Filling:
- 8 oz cream cheese, softened
- 1 cup powdered sugar
- 1 tsp lemon zest
- 1 tbsp lemon juice
- 1½ cups heavy whipping cream
For the Crumb Topping:
- ½ cup all-purpose flour
- ½ cup powdered sugar
- ¼ cup cold unsalted butter, cubed
Instructions
- Preheat oven to 350°F (175°C). Grease and flour two 9-inch round cake pans.
- In a large bowl, beat cake mix, water, oil, egg whites, lemon zest, and lemon juice until smooth (about 2 minutes).
- Pour batter evenly into prepared pans. Bake for 25–30 minutes or until a toothpick inserted comes out clean. Cool completely.
- While cakes are cooling, prepare the filling. In a medium bowl, beat cream cheese until smooth. Add powdered sugar, lemon zest, and lemon juice. Beat until combined.
- In a separate bowl, whip the heavy cream until stiff peaks form. Gently fold into the cream cheese mixture. Chill until ready to use.
- For the crumb topping: Combine flour and powdered sugar. Cut in butter using a pastry cutter or fork until crumbly. Spread on a baking sheet and bake at 350°F for 10–12 minutes until lightly golden. Cool.
- Assemble the cake: Place one cake layer on a serving plate. Spread filling evenly. Top with the second cake layer. Frost the top and sides with remaining filling. Sprinkle crumb topping generously over the top and sides.
- Chill the cake for at least 2 hours before serving.
Would you like a version with a homemade lemon cake base instead of a boxed mix?