Saute onion, green pepper and garlic in hot oil in skillet, stirring frequently until tender. In another skillet, cook down andouille sausage and drain off fat.
Stir meats into onoin, green pepper and garlic mixture. Cook for 5 to 10 minutes. Add all remaining ingredients and place into a lightly grased 9 x 13 caserole dish. Cover dish and bake at 350 F for one hour.