Karen. I have never marinated the roast before cooking with this process, but I think you certainly could. If you decide to marinate I would look for a recipe that has herbs or spices that will compliment the rest of your meal. Good luck with your roast!

Michele I am so happy you enjoyed the roast. It is my favorite method for this cut of beef! Thanks for sharing!!

Glad to hear your roast was a success! Mushrooms would be fantastic with the beefy goodness!

Patricia – Mushrooms do produce a lot of liquid but not sure how they would hold up for the long cooking time. I would imagine they would completely dissolve and disappear, and not sure about the texture they might leave behind. I would try the one onion you have under the roast and possibly add the mushroom on top halfway through your cooking time. You should be able to make a nice gravy out of them to serve with the roast. Good luck and love to hear how it turns out for you!

Susan. I have never tried using dried onions. The onions serve two purposes besides adding flavor, one is to lift the roast off of the bottom of the crock pot, the second is to add some humidity to the roast, so I am not sure if you would have the same result using dried onions. They certainly would bring flavor but not really sure since I have never used them myself. I would say that your potatoes would add the moisture however you might find they fall apart before the roast is done. I have added potatoes and carrots to meat cooked in the crock pot but usually not for the full length of time. Please let me know how this works if you give it a go. Happy Cooking!