Blueberry, Apple and Walnut Cake | What Dad Cooked

Ingredients

• 225g plain flour plus extra for the cake tin
• 1 1/2 tsp baking powder
• 1/4 tsp fine salt
• 175g light muscovado sugar
• 175 unsalted butter softened
• 3 medium eggs
• 1/2 tsp vanilla essence
• For the fruit and nuts
• 225g small fresh blueberries, washed and dried
• 2 cox apples peeled and chopped
• 100g chopped walnuts
• 3 tbs flour
• For the streusel topping
• 50g cold unsalted butter cubed
• 75g demerara sugar
• 1 tbs dark muscavado sugar
• 75g plain flour
• 25g ground almonds (optional)
• Pinch salt