Preheat oven to 425 F and grease muffin tins
Combine sugar and cinnamon, then add melted butter and flour. do not over mix. It will be a paste, let the butter set and you can crumble it!
Combine flour, baking soda/powder, cinnamon, nutmeg, allspice, and salt. Add grated and chopped apple. In a separate bowl, combine oil, sugar, eggs, yogurt, apple sauce, and vanilla
Combine wet and dry ingridients
Put batter into muffin tins, top with crumble. Bake for 15 minutes.
