• Preheat the oven to 180℃/170℃ Fan/375℉
• Line a muffin pan with paper cases

Prepare the Streusel Topping

• Put 25 grams (3 tbsp) plain (all purpose) flour and 25 grams (1½ tbsp) butter into a small bowl. Cut in the butter with a knife, then rub it in until it looks like breadcrumbs.
• Stir through 50 grams (4 tbsp) soft light brown sugar and leave to one side.

To make the Muffins

• Put 175 g (¾ cup) self-raising flour, 50 g (⅓ cup) rolled oats, 140 grams (¾ cup) light brown sugar, ½ tsp bicarbonate of soda and 2 tsp cinnamon in a large bowl and mix them well together.
• In a medium sized bowl, beat 1 egg then stir in 150 ml (¾ cup) milk and 6 tbsp vegetable oil.
• Gently stir the egg mixture into the dry ingredients, with a metal spoon or spatula, until the flour is 'just' mixed.
• Fold in the 125 g (1 cup) chopped apple (weight before peeling and coring) and 175 g (¾ cup) mincemeat.
• Divide the mixture between the muffin cases, filling them to the brim.
• Sprinkle each muffin with a teaspoon of the streusel mixture.
• Bake for 20 minutes until risen and golden.