Butternut Squash, Bacon, Onion, and Spinach Quiche

I have a horrible habit of buying butternut or acorn squash and then letting it decompose on our kitchen countertop without ever using it. Grandiose ideas always dance in my head when I happily add it to my shopping cart at the grocery store. “I will carve this butternut squash into a festive turkey,┬ároast it,…