Preheat your oven to 350°F. Dice the peaches and place them in a baking dish.
Top the peaches with guava jam, maple syrup, and cinnamon. Mix well and set aside.
In a medium bowl, combine oat flour, oats, ground flaxseed, melted coconut oil, and maple syrup.
Evenly distribute the crumble mixture over the peaches in the baking dish.
Bake for 30 minutes until golden brown and bubbly.
Allow it to cool slightly before serving. Enjoy it plain or with your favorite ice cream or yogurt!