I used 16 oz. of trader joe's mixed baby heirloom tomatoes (which I also routinely use for homemade pizza instead of sauce!) and it came out great! Make sure to sufficiently season your fish well before cooking. Also I was out of cream so I upped the corn starch to a full teaspoon along with the a little over a quarter cup of regular milk (all I had) and it was delicious. I imagine that the added fat inherent in the cream would make for a yummy mouthfeel but proved unnecessary. A little extra cornstarch is all that's needed to thicken the sauce just enough. Aside from these changes the recipe was followed exactly. Btw, amount of oil is not stated in recipe, so I used about 2 Tblspn worth, HOwever it occurred to me later that modifications in the amount of cooking medium (oil or butter?) could affect the mouthfeel of the sauce in the end. Served over brown rice and with grilled zucchini on the side=delicious meal.