Plum crumble cake - Good Food Middle East

Ingredients

• 175g butter, at room temperature
• 175g golden caster sugar
• 3 large eggs
• 225g self-raising flour
• 1 tsp baking powder
• 2 tsp vanilla extract
• 100g ground almonds
• 85g soured cream
• 5-6 ripe plums, halved and stoned
• 50g ground almonds
• 50g plain flour
• 50g golden caster sugar
• 50g butter, chopped into pieces
• soured cream or yogurt, to serve