Preheat oven to 350 degrees.
In a medium size bowl, mix together the flour, wheat bran, baking powder, baking soda, and pumpkin pie spice.
In a separate bowl, mix together the squash, milk, brown sugar, & applesauce.
Add the wet ingredients into the dry, and combine.
Fold in cinnamon chips.
Spoon mixture into a 12 cup muffin pan, sprayed with nonstick cooking spray (or liners), about 3/4ths full.
If using crumb topping, mix all the topping ingredients together and sprinkle on top of muffins.
Bake approximately 20 minutes or until done.