This has probably been my favorite recipe so far. I didn't have a few ingredients, so I made a couple substitutions and they are as follows: For the white whine, I used one tablespoon red wine vinegar and one tablespoon chicken broth. For the shallots, I used one teaspoon onion powder, which I added in with the vinegar and broth. For the heavy cream, I subbed one tablespoon skim milk and one tablespoon non-flavored coffee creamer. I had baby bellas, so I used those instead. I can't believe how so few ingredients can be so full of flavor! Served with grilled yellow summer squash and over a bed of brown parsleyed rice, this meal blew me away. One other thing I did was sprinkle about 1/8 tsp kosher salt over the mushrooms as they cooked, before added the vinegar, et all. I highly recommend this recipe and I will be making this again!