FOR THE CAKE:
- Plain Flour 315g
- baking powder 1 ¾ teaspoons
- 1/2 tsp baking soda
- 1/4 tsp salt
- 115g butter melted and cooled to room temperature.
- 115g olive oil
- 350g granulated sugar.
- 3 large eggs, room temperature
- 2 tsp vanilla extract
- 225g buttermilk, room temperature
- 2 tbsp lemon zest
- 75g fresh lemon juice
FOR THE LEMON BUTTERCREAM:
- 228g salted butter, room temperature.
- 114g cream cheese room temperature
- 1 tbsp lemon zest (from 1 lemon)
- 715g Icing Sugar
- 3 tbsp fresh lemon juice
- 3 to 4 drops yellow food colouring, optional
For Decoration.
- White chocolate curls, and/or edible flowers
Directions
- Preheat the oven to 175oc.
- Whisk together the flour, baking powder, baking soda, and salt in a medium bowl.
- Whisk together the butter, olive oil, and sugar in a large bowl until combined. Add the eggs and whisk for 1 to 2 minutes, until lightened in colour. Add the vanilla, buttermilk, lemon zest and juice, and whisk to combine. Add the flour mixture and whisk to combine.
- line 2 8-inch round cake tins with baking spray with flour. (Alternatively: butter and flour the pans). Divide the batter evenly between the prepared tins. Tap the tins a few times each on a kitchen towel on your counter-top to level the surface and remove air bubbles from within the mix.
- Bake for 28 to 32 minutes or until toothpick inserted into the centre comes out cleanly. Transfer to a cooling rack. Let cool in the tins for 10 minutes, then turn out onto a cooling rack to cool completely, about 1 1/2 hours.
- For the Icing: Add the butter, cream cheese, and lemon zest to the bowl of an electric stand mixer fitted with the paddle attachment and beat on medium speed until creamy, about 2 minutes. Add the powdered sugar. Beat on low speed until combined. Increase the speed to medium and beat until smooth, about 1 minute. Scrape down the sides and bottom of the bowl. Add the lemon juice and yellow food colouring, if using. Beat until light and smooth, about 2 more minutes.
- To assemble: Trim the cake layers to make the tops flat and even, as needed. Place 1 cake layer on a cake plate. Spread half the of the buttercream mixture over top. Top with the second cake layer and spread buttercream all over the top and sides of the cake.
- Garnish with white chocolate curls, lemon slices, and/or edible flowers if you like.