This is my own recipe that I have developed over years. Today for the first time I measured everything. If you want a mushroom for a meal use large mushrooms if you are doing for a appetizer use small. This recipe is based on using small mushrooms. If you are using large you may have to cook it a little longer.
Notes from the Test Kitchen:
If you love seafood, then you'll love these! The stuffing is delicious and I really liked the addition of different color bell peppers. I used small mushrooms because I like to serve one bite appetizers, but try using larger mushrooms for a great meal. They're delish!
crab meat (you don't have to use lump, but do not use just claw meat)
fresh mushrooms, either button mushrooms or small portobello