You can use any mushrooms for this vegan recipe– Baby Bellas, Portobellas, or even button mushrooms will work fine. It may seem a large amount of mushrooms, but these cook way down.
Heat a large deep saucepan or saute pan and add oil.
When oil is very hot but not smoking, add mushrooms and turn heat to medium-low.
Sautee mushrooms, stirring frequently, until quite soft and browned, about ten minutes.
Add enough sauce to almost cover mushrooms, and reduce heat to simmer.
Simmer for about twenty minutes, until very soft and sauce is thickened.
Serve hot, over whole roasted sweet potatoes, with pickled onions and peppers on top.