Prep time 25 minutes
400g plain flour
1 ¼ tsp. baking powder
½ tsp. baking soda
1/2 tsp. salt
150g granulated sugar
1 ½ tsp. vanilla
120ml sunflower oil
130ml buttermilk [or milk with 1 tbsp. white vinegar]
Juice and zest of 1 large lemon
4 large ripe plums, pitted and halved
2 tbsp. brown sugar
Ingredients For the Topping
In a bowl, mix together flour, baking powder, baking soda, salt and lemon zest. Set aside.
In the bowl of an electric mixer beat eggs for 30 seconds, add sugar and beat on high. Add vanilla, oil and lemon juice and continue to beat.
Reduce speed and add half the buttermilk, half the flour mixture, the rest of the buttermilk and finally the rest of the flour. Beat until combined.
Pour in a greased baking dish and spread evenly. Halve or quarter the plums depending on the size and position plums evenly. Sprinkle brown sugar on top.
For the topping, mix together sugar and flour and rub butter in until it looks like crumbs. Sprinkle on top of the cake and plum mixture.
Bake for around 1 hour in a preheated oven at 180ºC.
Let cool and serve with a dusting of icing sugar.