Pretty good "topper" for bread slices. I served this to my guests yesterday and most enjoyed it. I added some mre garlic since I can never seem to have enough garlic in my food. I used low fat mayo because thats what I had in my house. I also added some honey to the onion to carmelize them and make them more sweeter at the end of the cooking process. I think next time I will not put them thru the food processor because I feel I would have liked this better with more chuncky pieces of mushrooms and onions. Over all a pretty good recipe I plan on making again.