Preheat oven to 350 degrees.

Sift together flour, baking powder, cinnamon, nutmeg, and salt.

In a bowl, whisk together sugar, eggs, melted butter, milk and vanilla.

Whisk the dry ingredients into the wet ingredients until just combined.

Fold in the diced apples, shredded zucchini (be sure to squeeze out excess liquid from the zucchini before measuring), and dark chocolate chips.

Divide the mixture into 12 lined muffin tin cups and bake for 25 minutes.

Remove and cool before serving.