Preheat oven to 180*
To make the crumb topping - In a small bowl add together 3 tablespoons oats, 1 tablespoon honey, dash of coconut oil. Mix together until crumbly.
To make the muffins - Blend hazelnuts in food processor until finely ground.
In a bowl add the ground hazelnuts and mix the rest of the dry ingredients together. (EXCEPT the chocolate and the roughly chopped hazelnuts)
Mix all the wet ingredients together in a bowl.
Add the wet ingredients to the dry and gently fold.
Add the chopped dark chocolate and roughly chopped hazelnuts and gently fold again.
Pour in to muffin tins 3/4 full and lightly add the crumb topping. Add a few chopped dark chocolate chunks on top. Bake for 19 mins at 180*C.
Once baked leave for 10 mins then remove from muffin tins and let completely cool. Enjoy!