I would say no as I think the moisture content of frozen just doesn't work for roasting. Squash tends to have a lot of it especially when frozen and often turns to mush when thawed.

I agree...no frozen for oven roasting....

Well, ok then i will have to buy one next time i am shopping. i was hoping to make todaybut i only have frozen.

I bought frozen butternut squash at Whole Foods last week. I planned to use it in a quiche I've had, which Whole Foods sells fresh. They don't often have it so I decided to make it myself. I bought a brand I'm not familiar with, Stahl Bush Island Farms. It is in a brown bag in their freezer section.

I had the same concerns you had so I decided to fill a glass jello cup with the diced squash, put a small pat of butter and a bit of brown sugar on top. Stuck it in my toaster oven at 350 for about 15 minutes, uncovered. I watched to see how much liquid came out.

I was surprised to see no liquid, squash was soft and absolutely delicious. Might be my new favorite snack.

I was worried about using it in a quiche because of the liquid content. I found no liquid in the small cup.

I am going to use it to make the quiche...if I don't eat it before.

Jane