Line the bottom of a medium cast iron skillet with the sliced peaches. Sprinkle a little bit of cinnamon on top.
In a small bowl, combine all the ingredients for the crumble with your hands. Form small crumbs, and sprinkle them evenly over the peaches.
Bake 25-30 minutes, until the topping is golden brown (but not burning!) Let cool for a few minutes before serving. It’s amazing with some homemade ice cream and caramel on top!
Recipe by Dana Monsees Nutrition at https://www.realfoodwithdana.com/summer-paleo-peach-crisp/