Apple & Cinnamon Muffins with Crumble Topping - nannycraig.com

Ingredients

• 100 g flour, plain
• 80 g butter (soft)
• 60 g sugar
• 1 tsp cinnamon (ground)
• 1 red apple (chopped into small cubes)
• 255 g flour, plain
• 45 g cornflour / cornstarch
• 3 tsp baking powder
• 150 g sugar
• 200 g sour cream
• 100 ml vegetable/sunflower oil (or similar)
• 2 tbsp milk
• 2 eggs
• 1 capful vanilla extract