Combine apples, cranberries, orange zest, sugar, and 3 tablespoons of flour in the dutch oven and mix well.
If your coconut oil is solid, then melt it in a small pot over medium heat.
In a medium bowl, combine oats, 1/2 cup flour, brown sugar, and salt. Pour in melted coconut oil and mix well. Sprinkle this mixture over the fruit.
Cover the dutch oven with its lid and place in a bed of hot coals. Cover with the lid, and place coals on lid (see this temperature chart to get a 350 degree oven).
Bake until the juice from the fruit is bubbly and the topping is golden brown.
