SPICED APPLE CRUMBLE MUFFINS

FOR COATING THE APPLES

• One tablespoon of plain (all-purpose) flour
• 1 teaspoon ground cinnamon
• 250g chopped diced apples

FOR THE CRUMBLE

• 50g cold butter, diced
• 100g plain flour
• pinch of salt
• 25g demerara sugar

FOR THE MUFFIN BATTER

• 320g plain flour
• 2 teaspoons baking powder
• ½ teaspoon bicarbonate of soda
• ¼ teaspoon fine salt
• 1 teaspoon ground cinnamon
• ½ teaspoon ground mixed spice
• ¼ teaspoon freshly ground nutmeg
• 100g granulated sugar
• 80g soft light brown sugar
• 180ml (3\4 cup) sour cream
• 60ml (¼ cup) milk
• 2 large eggs
• 180ml (¾ cup) vegetable or sunflower oil
• 1 teaspoon vanilla extract

FOR THE VANILLA GLAZE

• 100g icing sugar
• 1 ½ tablespoons milk
• 1 teaspoon vanilla extract