Ingredients
▢2 cups flour, plain/all-purpose (Note 1)
▢2 1/2 teaspoons baking powder (make sure it's still good)
▢1/4 tsp salt
▢4 large eggs (50-55g / 2oz each), at room temp (Note 2)
▢1 1/2 cups sugar, caster / superfine (Note 3)
▢115g / 1/2 cup unsalted butter, melted & HOT
▢1 cup sour cream, full fat, at room temperature (Note 5)
▢3 tsp vanilla extract
▢3 tsp vegetable or canola oil (Note 6)
▢3 tsp lemon zest
BLUEBERRIES
▢375g / 2 1/2 cups blueberries (Note 7 for frozen)
▢2 tsp flour
LEMON CREAM CHEESE FROSTING
▢225g / 2 sticks unsalted butter, at room temperature
▢250g / 8oz cream cheese, brick not tub, at room temperature but not too soft (Note 8, esp UK)
▢4 cups soft icing sugar / powdered sugar, SIFTED
▢1 tsp vanilla extract
▢2 tbsp lemon juice
▢Pinch of salt
DECORATING (OPTIONAL):
▢Extra blueberries, lemon slices, edible flowers
Instructions
PREPARATION:
Preheat oven: Preheat oven to 180°C/350°F (160°C fans) for 20 minutes before starting the batter. Place one shelf in the middle of the oven and a second beneath it.
Cake pans: Grease 3 x 20cm / 8” cake pans with butter and line with parchment/baking paper. (Note 9 more pan sizes)
Blueberries: Set aside ~1/3 of the blueberries (for scattering later). Toss the remaining blueberries in flour.
Be prepared: Have all batter ingredients measured out and ready to the add-in. New to baking? Read 'Tips for Success' above the recipe card.
BATTER:
Combine dry ingredients: Whisk flour, baking powder, and salt in a large bowl. Set aside.
Whisk eggs: Beat eggs for 30 seconds on speed 6 of a stand mixer fitted with a whisk attachment, or hand beater.
Add sugar, then beat: With the beater still going, pour the sugar in over 45 seconds. Then beat for 7 minutes on speed 8, or until tripled in volume and white.
Gently add flour: Scatter 1/3 flour across the surface of whipped eggs, then beat on Speed 1 for 5 seconds. Add half the remaining flour, mix on Speed 1 for 5 sec. Add remaining flour, then mix on Speed 1 for 5 – 10 sec until the flour is just mixed in. Once you can’t see flour, stop straight away.
Whisk wet ingredients: Put sour cream, hot butter, oil, vanilla, and lemon zest into the now-empty flour bowl. Whisk well until smooth.
'Temper' sour cream mix: Add about 1 1/2 cups of the egg mixture into the sour cream bowl (2 big scoops, no need to be accurate). Whisk well until smooth.
Slowly combine sour cream mix and egg mix: Turn the beater back on Speed 1 then scrape the sour cream mixture into the egg mixture over 15 seconds, then turn the beater off.
Scrape and final mix: Scrape down sides and base of the bowl. Beat on Speed 1 for 10 seconds. The batter should be thick but soft, not runny and thin.
Blueberries: Quickly but gently fold in flour-coated blueberries.
BAKE:
Divide batter between cake pans, smooth the surface. Scatter over reserved blueberries.
Bake 25 minutes or until golden and toothpick inserted into the center comes out clean. (If you cannot fit all pans on one shelf, put 2 pans on the middle shelf and 1 pan underneath. Take the top pans out at 25 minutes, move the lower pan to the middle shelf and bake for a further 3 minutes)
COOL & FROST:
Once out of the oven, cool in cake pans for 15 minutes, then gently turn out onto cooling racks upside down. Peel off the baking paper and cool upside down – any slight dome will flatten perfectly (for neat layers).
Frost upside down layers with Cream Cheese Frosting! Decorate with extra blueberries, lemon slices, and edible flowers, if desired.
LEMON CREAM CHEESE FROSTING:
Beat butter with the whisk attachment in a stand mixer for 2 minutes until fluffy and creamy, and it becomes a paler color. Add cream cheese, then beat for 30 seconds just until smooth.
Add icing sugar / powdered sugar, then gently mix on speed 1 (to avoid an icing powder storm). If you do get a powder storm, cover with a tea towel, then once mostly incorporated, beat on high for a full 2 minutes on Speed 7.
Add vanilla and lemon juice, then beat for a further 30 seconds. Use immediately. (Note 11 re frosting too sloppy)