Preheat oven to 350°F
Drain peach halves and cut into slices. Put slices into a 8-inch square baking dish
Sprinkle cinnamon powder over sliced peaches and toss gently to mix
Grind rolled oats in a food processor, then add almond flour, sugar, pinch of salt and butter
Pulse until it comes together. You can also do this by hand (use ground oats), using fingers to cut the butter into the dry ingredients until it resembles coarse crumbs
Evenly distribute almond flour mixture over the sliced peaches.
Bake in the preheated oven for about 20 minutes or until it becomes bubbly and slightly browned on top
Let cool a bit before serving. If serving with ice cream, you may use it right away. Enjoy!