Apple Crumble Muffins - The Road to Loving My Thermo Mixer

Name: Apple Crumble Muffins - The Road to Loving My Thermo Mixer
Cuisine: American
Ingredients: Scale; 2 large pink lady apples, peeled and cored and small dice; 2 Tbsp of water; 1 tsp ground cinnamon; 90g sugar; 75g wholemeal self raising flour; 230g self raising flour; Pinch of baking powder; 200g milk; 90g butter, melted; 2 eggs; 1 tsp vanilla extract or 1/2 tsp vanilla powder; 40g plain flour; 50g brown sugar; 40 g butter