Blackberry & apple mallow traybake
- Preparation and cooking time
- More effort
- Makes 16 squares
For the cake
- 140g unsalted butter , softened, plus a little for greasing
- 140g golden caster sugar
- 1 egg and 2 yolks, beaten together
- ½ tsp vanilla extract
- 100g self-raising flour
- 100g ground almond
- 1 tsp baking powder
- 1 tsp freshly grated nutmeg (or ½ ground)
- 1 large Bramley apple , about 200g, peeled and sliced (to give about 140g)
- 125g blackberry (avoid 'dessert' blackberries, as they lack bite)
For the mallow and to finish
- STEP 1
First make the blackberry sauce to ripple through the mallow. Put the berries and 1 tsp sugar in a small bowl and cover with cling film. Microwave for 30 secs on High. Alternatively, add 1 tsp water then soften in a pan over a low heat. Mash well until saucy, then leave to cool.
- STEP 2
Heat oven to 160C/140C fan/gas 3. Grease and line the base and sides of a 23cm square traybake tin, leaving some overhang. Using electric beaters or a hand whisk, beat the butter and sugar in a large bowl until very pale and creamy, then beat in the egg and yolks, followed by the vanilla. Mix the flour, almonds, baking powder, nutmeg and a pinch of salt, then fold into the fluffy mix to make a very thick batter.
- STEP 3
Fold in the apple, then spoon into the tin and smooth over the top. Scatter with the blackberries, poke them in just a little, then bake for 45 mins until golden and a skewer inserted into the middle comes out clean. After removing, leave the oven on.
- STEP 4
For the mallow topping, you’ll need a large piping bag with a 1cm nozzle, or a food bag with a corner snipped off. Whisk the egg whites, lemon juice and a pinch of salt to stiff peaks. Add the sugar 1 tbsp at a time, whisking well after each spoonful, to make a shiny, stiff meringue. Ripple with the cooled blackberry mix, then spoon into the bag. Pipe 16 evenly spaced, walnut-sized meringues on top of the cake (you’ll have some left over), scatter with the toasted almonds, then bake for 10-12 mins until the meringues are just set. Cool in the tin for 30 mins, then remove to a rack to cool completely. Add a dusting of icing sugar, if you like, then cut into squares.