Another Prevention Magazine recipe with a few changes. Since it was in my old recipe box, I presume that this is a quite a few years old, but it is still a great recipe. It is a very basic primavera but I love the creamy ricotta vs the heavy cream sauce. You can change up the "veggies" if you want, but this is pretty classic. Try to get a good quality tomato sauce which can really make a difference in the flavor. If you want, serve with some grilled chicken or steak; or just a nice green salad and some fresh baked bread. It is a great hearty casserole.