These cuties are sort of deceiving at first glance. Their shape appears to be more similar to a cold weather squash (think acorn & sweet dumpling squash), which tend to be a little bit more rigid on the outside and require some extra work in the prep department. Patty pans, however, are a variety of summer squash. They have tender flesh, and are mild and sweet, much like a zucchini or yellow squash.
Pattypan comes in yellow, green and white varieties. Its name was inspired by a pan for baking patties, which apparently had unmistakable scalloped edges, much like the pattypan.