Steve's Favorite Breakfast Casserole in the Dutch Oven

I made this for our sturgeon trip last week.  My dutch oven creation inspired by a facebook video. 

Steve's Favorite Breakfast Casserole in the Dutch Oven
24 oz. package frozen hash browns
1/8 to 1/4 c. oil
1 pound breakfast sausage
4 T. flour
1/2 t. salt
1/2 t. pepper
1/2 t. garlic powder
1/2 t. season salt
3 c. milk
16 oz. can large, flaky biscuits, cut into quarters
2 T. melted butter, for brushing on top when finished baking
In 12" dutch oven coat the bottom with oil and brown the hash browns (don't fully cook). 
In another dutch oven or cast iron skillet brown the sausage.  Stir in the flour and seasonings to make a roux.  Stir in the milk and cook until thickened stirring often.  Pour the gravy over the hash brown in the 12" dutch oven.  Drop the cut up biscuit pieces over the top of the gravy.  Place the lid on the dutch oven and place on top of 10 heated briquettes and 18 to 20 briquettes on top of lid.  Bake for about 20 minutes, until the biscuits are golden brown.  Brush the butter over the top of the biscuits.  Serve. 

Can also be baked in a regular oven.....@ 400 for 15 to 20 minutes..