Butternut Squash Stuffed Shells with Lemon Sage Browned Butter Sauce

It is that time of year when I am using the “lasts” of my garden.  Today it was the last of my butternut squash.  Normally, my butternut squash harvest is so large that they last til spring.  But the combination of my having fewer butternut squash plants this year (I planted a variety of winter…