Perfect Pot Roast
["1/3 c. flour", "1/4 c. water", "1 tsp. salt", "3 to 4 lb. chuck roast", "2 potatoes", "2 onions", "8 oz. tomato sauce", "1 tsp. instant beef bouillon", "1/2 tsp. pepper", "1/2 lb. mushrooms", "3 carrots"]
["Preheat oven to 325\u00b0.", "Place large cooking bag in 9 x 13-inch pan.", "Shake flour in bag; add tomato sauce, water, bouillon, salt and pepper in bag and mix.", "Add roast and mushrooms.", "Peel and quarter vegetables; add to bag.", "Turn gently over and over.", "Close and tie bag; make 6 slits in bag.", "Cook 2 to 2 1/2 hours."]
["flour", "water", "salt", "chuck roast", "potatoes", "onions", "tomato sauce", "instant beef bouillon", "pepper", "mushrooms", "carrots"]