Preheat oven to 400.
Drain peaches (reserving juice in separate bowl) and place in 9x13 baking pan.
Add juice, cinnamon and salt to pan on medium heat.
Slowly sprinkle in glucomannan, stirring constantly.
Once combined, pour over peaches.
In a food processor, combine, coconut flour, sugar (or substitute), oatmeal and spice. Pulse until crumbs form.
Spread crumbs evenly over your peaches and juice.
Bake for 30-45 minutes or until top is golden brown.