This product is microwavable. No other heating instructions are given, although Sonia and I will now assert that it is indeed "stovetoppable." At the moment, Sonia and I are sans microwave yet again. Well, okay, I take that back. We still have a microwave, but it's in our RV, and I wasn't about to fire up the generator on Tiago the Tioga just to heat our lunch. So we tossed this refrigerated—not frozen—food item in a skillet and stirred it around until heated evenly, and the whole thing worked out beautifully...or at least deliciously, anyway.
Sonia immediately mentioned that the product lacked "sauce." I think she was talking about the creamed spinach...as well as the parmesan cheese? I thought there was plenty of creamed spinach, but I guess our chosen method of preparation kind of ruined the "gratin-ness" of the dish. Since we didn't microwave the product, I'm guessing we just stirred all the browned, grated cheese right into the rest of the foodstuffs. Flavor-wise, it worked, although the presentation might have suffered a bit as a result. Eh. We were both hungry, so we wouldn't have spent very long gawking at the dish before shoveling it into our mouths anyway. You're lucky we paused to take a picture at all.
Sonia also asserted her absolute approval of the trio of flavors here: butternut squash, spinach, and parmesan cheese—she just wanted a tad more spinach and parmesan. I concur that the flavor combo worked on some level, but I felt that the subtle natural sweetness of the squash worked better with amaretto cookie crunch in the aforementioned parmigiana, and that elements like spinach and parmesan cheese mix better with salty, savory vegetable dishes, such as the classic potatoes au gratin.
Sonia liked that it walked the line between savory and sweet, whereas I generally prefer one or the other. And it's always possible my palate's a little off, or that I'm going insane, but I thought the butternut squash in this instance in particular, was unusually sweet. No biggie. I still give it a solid three and a half stars and think most butternut squash fans will like it. Sonia gives it a full four.
Bottom line: 7.5 out of 10.