Preheat oven to 350 F (177 C).
Melt butter (in microwave).
Peel and core apple; dice into very small cubes.
In a large bowl, combine melted butter, sugar, almond milk, ground flaxseed, and vanilla; mix well.
Mix in pumpkin puree.
Slowly add in dry ingredients - flour, baking powder, baking soda, salt, pumpkin pie spice. Combine well.
Fold in apple chunks and pecans.
Scoop into muffin tin; should make 12 muffins.