Apple Crumble Cupcakes

Name: Apple Crumble Cupcakes
Prep time: 1 h
Cook time: 35 min
Total time: 1 h 35 min
Cuisine: British
Ingredients: 2 Apples (medium sized, regular eating apples); 30 g Light brown soft sugar; 1/2 tsp Cinnamon; 1/4 tsp Mixed spice; 1 tsp Cornflour ((cornstarch)); 10 g Butter (unsalted); 8 g Light brown soft sugar; 17 g Plain flour; 1/8 tsp Cinnamon; 175 g Butter or baking spread (softened, unsalted); 175 g Light brown soft sugar; 3 Eggs (large); 175 g Self raising flour; 175 g Butter (softened, unsalted); 350 g Icing sugar; 1 1/2 tsp Cinnamon; 2-3 tbsp Milk