Preheat oven to 350°F. Wash and dry your peaches. Slice and place in a mixing bowl.
Add lemon juice, cane sugar, arrowroot powder, and salt. Gently toss and set aside.
Grab another mixing bowl. Fold together almond flour, rolled oats, candied pecans/almonds, brown sugar, salt, and cinnamon.
Using a pastry blender (or fork or knife), cut butter into mixture. After 2-3 minutes of cutting, a crumble-like texture will form.
Layer peaches into a greased oven-safe baking dish & add crumble. Bake for 30 minutes or until the crumble becomes golden brown and peaches are bubbling.