America's favorite pot roast

I do my roast fairly often like Anna's but once in awhile I do it this way. This is a weight watchers friendly recipe at 7 pts per serving.

Shared by Sky

* 3 1/2 Pounds sirloin tip roast, trimmed
* 1/4 Cup flour
* 2 Teaspoons salt
* 1/8 Teaspoon pepper
* 3 Carrot -- , Peeled and sliced
* 3 potatoes -- peeled and quartered
* 2 Small onions – sliced
* 1 Stalk celery -- cut in 2" pieces
* 1 2 Oz Jar mushrooms – drained or 1/4 Cup mushroom gravy
* 3 Tablespoons flour
* 1/4 Cup water

Trim all excess fat from roast; brown and drain if using chuck or another highly marbled cut. Combine 1/4 cup flour, the salt and pepper. Coat meat with the flour mixture. Place all vegetables except mushrooms in Crock-Pot and top with roast (cut roast in half, if necessary, to fit easily). Spread mushrooms evenly over top of roast. Cover and cook on Low for 10 to 12 hours. If desired, turn to High during last hour to soften vegetables and make a gravy. To thicken gravy, make a smooth paste of the 3 tablespoons flour and the water and stir into Crock-Pot. Season to taste before serving. Serves 4 to 6