PLEASE use a non-stick skillet for this! I used a stainless skillet, and the mushrooms began to burn very quickly, despite a heavy spraying of canola oil from my Misto before I started. I ended up using 2-3 tbsp. olive oil to cook the mushrooms. I don't use cooking spray because of the chemicals, so maybe that would have made a difference. Anyway, the sauce tasted wonderful, but I would double the amount of sauce, mushrooms & spinach or just halve the amount of pasta to make 2 good-sized servings. To me, there wasn't enough "stuff" for each serving. Again to be fair, I used whole wheat angel hair so that may have made a difference. I will definitely make this again - I think it will be perfect for 2 people with 4 oz. of angel hair!