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For the Acorn and Butternut squash, I boiled it for 30-60 minutes in a large pot, then let it cool and scraped out the flesh and put it in a strainer over a large bowl for several hours. I then froze it in quart-sized Ziplock bags.
With Thanksgiving and Christmas around the corner, I know I will use a lot of it in Pecan Butternut Pie. Yum!
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(Note: Spaghetti squash should be tried cautiously after symptoms have subsided because it can be hard to digest.)