DH took this on as his craft project for Christmas after my plan to make the snowman handprints on glass ornaments failed. He made them with DD last night.
The blog that DH was working
from said you need to bake them for 3 hours at 200 degrees. After 3
hours, they were still a little soft in some spots and the color wasn't
quite uniform. I think those damn things were in the oven for 5 hours
altogether last night, and DH was steadily increasing the temperature up
to about 325 by the end of it. He still said he didn't think they were
quite done, but we weren't leaving the oven on all night. They're now
sitting on a cooling rack on our kitchen table, where they've been since
last night. DH said they might need to go back in the oven tonight.