Sour milk is the secret ingredient in this Whole Wheat Apple Cinnamon Sour Milk Muffins Recipe that yields a light and tender-crumbed muffin! These are sweetly aromatic of cinnamon, studded with fresh apple, and absolutely delicious.

When Mike and I lived in Buffalo, we had the best neighbor ever. (Her name was Bee. She really was the sweetest, most amazing lady; she’s the one I talked about when I mentioned our ant problem one summer.)

Being a bit older, she was old-school in a lot of ways.…