Mushrooms are a great side next to a steak, chicken, or on an antipasto platter. Add balsamic to the mushrooms to make them more flavorful, but only add at the end of cooking. Balsamic vinegar isn’t intended to cook with, cooking it kills the distinctive flavorful taste it has.
Also, before you use the balsamic, make sure you bought a good balsamic vinegar.
Wash mushrooms, trim ends, and slice in half.
Melt butter in a pan, add garlic and onions. Saute for 3 minutes.
Add mushrooms and cook for 5 minutes.
Add salt pepper. Cook for another 2 minutes.
Add balsamic vinegar and parsley. Stir well.
Serve while hot next to a protein or serve cold on an antipasto platter.