Shares & Saves. Save. The British thermal unit, or BTU, is a unit of energy, one that is used to quantify the heating and cooling power of, water heaters, air conditioners and similar equipment.hares & Saves. Save. The British thermal unit, or BTU, is a unit of energy, one that is used to quantify the heating and cooling power of, water heaters, air conditioners and similar equipment.
Winter squash includes acorn squash, spaghetti squash, butternut squash, delicata squash, hubbard squash, kabocha squash, turban squash, sweet dumpling squash, and of course all types of pumpkins. Prepared winter squash also freezes well and keeps for about 6-8 months in the freezer.
How to Roast Butternut Squash, Skin On. 1  There are two ways to roast butternut squashâskin on, and skin off. 2  To roast skin on, preheat oven to 400 degrees F. Slice off the stem and bottom ends of the squash so that both ends are flat.  Set the squash on a cutting board with the widest cut end flat against the board.