Slightly adapted Veggie Burgers recipe from Martha Stewart website. Includes 1 hour chilling time. My food processor didn't chop the mushrooms easily, so I used the shredder attachment. Also had some sprouts that my hubby was unlikely to eat on the burger so I pureed them and added them to the mix. But you could also just add them as garnishment. Or do both! Mmmm, sprouts. Other things that are good to add to the finished burger is avocado, cucumber, mustard, mayo, yogurt, salsa, lettuce, grilled veggies, etc. Yum!