1-Preheat the oven to 350°F, and lightly: Preheat the oven to 350°F, and lightly coat an 8″-square baking pan with nonstick cooking spray.
2-In a medium bowl, toss together the: In a medium bowl, toss together the diced peaches, cornstarch, almond extract, and ¼ teaspoon cinnamon until thoroughly combined.
3-In a separate bowl, mix together the: In a separate bowl, mix together the oats, flour, and remaining cinnamon. Add in the maple syrup and butter, mixing until completely incorporated.
4-Spread the peach mixture into the prepared: Spread the peach mixture into the prepared pan, and evenly sprinkle the oat crumbs on top. Bake at 350°F for 35-45 minutes, or until the peach juice is bubbling and the oat mixture turns crunchy. Cool completely to room temperature. For best results, let the crumble rest for at least 2 hours after coming to room temperature before serving to allow the juices to thicken.