Preheat oven to 375 degrees F. Mist a 9-inch x 13-inch dish with nonstick cooking spray.
Place pitted cherries in the dish and sprinkle with the sugar and tapioca starch; mix until cherries are evenly coated.
In a large bowl, combine the almond flour, oats, brown sugar, and salt; mix until well-combined. Add coconut oil and using your hands, blend the coconut oil into the ingredients until no large clumps remain. Sprinkle the oat mixture evenly over the cherries.
Bake for 45 minutes until bubbly and oats are beginning to brown. Cool slightly before serving.