Delicious, however I found the Balsamic a bit overpowering. Next time I will use 1/3 cup instead of the 1/2 cup that is recommended. I added carrots and potatoes with no extra liquid and they were all great.
Made this for dinner tonight and OMG! Deceptively simple with rich, delicious flavor. My husband had to stop himself from eating it was so good. Didn't bother with all the dried mushrooms and stuff--just a pound of sliced, ordinary mushrooms and a long, slow bake all afternoon. Made a sauce from the drippings, served on mashed potatoes--Not your Mamma's pot roast!
The flavor was outstanding with the onions and mushrooms. The meat came out too dry by cooking it at 350 - I would recommend cooking it at a lower temperature like 200 for longer time, until the meat internal temperature reaches 130 to 140 degrees.