Crockpot Beef with juice

1 large onion , halved and sliced thin 8 ounces portabello mushrooms , sliced 2 tablespoons butter 1 tablespoon oil 1 tablespoon flour 3 garlic cloves ,[...]

1 1/2 lb beef roast 1/2 tsp pepper 2 x garlic cloves chopped 1/2 env onion soup mix 2 tsp worcestershire sauce 1 tsp steak sauce 3 x carrots diced 2 x celery[...]

1 large onion , halved and sliced thin 8 ounces portabello mushrooms , sliced 2 tablespoons butter 1 tablespoon oil 1 tablespoon flour 3 garlic cloves ,[...]