Whisk flour and salt, cut in cold butter and shortening until crumbly, then add water to form dough. Chill for 30 minutes.
Slice honeynut squash thinly, toss with shallots, thyme, nutmeg, salt, pepper, and olive oil.
Preheat oven to 400°F. Roll out dough, spread goat cheese, arrange squash mixture, drizzle honey, fold edges, brush with egg wash, and bake for 20-25 minutes.
Notes
Chill the dough thoroughly to ensure a flaky crust.