Fun fact! You can eat the peel of most winter squash! This is true especially for acorn squash and delicata squash. Spaghetti squash is a different story, though - only the inside strands are edible. In the case of butternut squash, if your squash is smaller, you can opt to leave the peel on, but the bigger the squash, the tougher the peel. For this recipe, I always opt to peel my squash.