Set paper liners into the 12 cups of the muffin tin. Preheat oven to 350.
In the large mixing bowl, measure out dry ingredients (flour, sugars, spices baking soda and salt. Whisk them together until well blended.
In the medium mixing bowl, combine wet ingredients (eggs and pumpkin). Slowly pour in the melted coconut oil until well incorporated. Stir in the chocolate chips until evenly distributed.
Spoon the wet mixture into the dry ingredients. Mix until it just comes together. The less stirring, the better.
Spoon batter until it fills each muffin liner almost to the top.
Sprinkle with crumble topping.
Bake for 20 minutes and check. Mine took a few more minutes (approx 25), but it will depend on your oven. Muffins are done when a toothpick inserted in the center comes out clean. Remove from tin when you can handle them and let cool completely on a baking rack.
Once completely cool, drizzle with glaze.