I just called La Pizzaria Restaurant and spoke to Head Chef. Although there is a mushroom sauce with chicken broth this IS NOT the mushroom cream sauce on the vegetarian menu! The ingredients on the vege-menu are: heavy whipping cream, butter, roasted garlic, and mushrooms. . . .and by the way, it's awesome!!!
Also, the home made vegeburgers are the BEST ON THE PLANET!!! They are completely FULL of red peppers, zucchini, mushrooms, and carrots. Go get one!
Cons: you'll eat too much