I like to use cases to bake these muffins in because they are very moist! They will be easier to remove from the pan and easier to store if baked in cases
Use a tart apple variety such as Bramley or Granny Smith for a really sharp flavour which will cut through the sweetness of the streusel topping.
When making muffins, it is really important to remember not to over mix the batter. Over mixing muffin batter will lead to tough and chewy muffins, not light and fluffy ones. So, once you add the dry ingredients in with the wet, keep the mixing to a minimum to get the best results.
Fill the muffin cases to near the top with the mixture. This will give you beautiful tall muffins. Heavenly!
Press the crumble topping down gently on the muffin mixture to help it stick to the tops. And be generous for that delicious crunch!
Baking the muffins at a higher temperature for the first five minutes gives them a large heat boost, resulting in a big rise and beautiful dome shaped muffins.