In a large skillet brown Corned Beef Hash and onion over medium heat, until cooked through.

Add the flour to the mixture and continue cooking for 2 minutes, stirring occasionally. Slowly add milk and bring the mixture to a biol. Reduce heat and let simmer for 1-2 minutes or until thickened.

Remove from heat and add hot sauce and 2 c. of cheese. Stir until melted and set aside to cool for five minutes. Transfer to large bowl and add beaten eggs, salt and pepper. Stir until combined.

Pour mixture into a lightly greased 9x13'' baking dish. Place in fridge overnight.

Preheat oven to 350 degrees. Bake casserole for 1 hour or until the middle is set and edges are golden brown. Top with remaining cheese and bake 5 more minutes or until cheese is melted.