Turn your oven to 375. Lightly grease a 12 cup muffin tin.
Wash, peel and finely dice your squash and steam for 5 minutes till softened. Finely chop apples or pears.
Mix dry ingredients into a bowl, and wet ingredients in a separate bowl.
Slowly mix the dry ingredients, about 1/3 at a time, into the wet ingredients. Fold in mix-ins-- squash, fruit and sunflower seeds. Don't over-mix .
Bake for 20-25 minutes, until they are lightly golden brown on top and a toothpick inserted in the middle comes out clean. Allow to rest for 10 minutes to cool on rack. Once cooled, store in refrigerator.