I love butternut. Here are a few ways I use it (or have used it),
Butternut risotto. Always a win. By itself or topped with leftover chicken or cooked with pork mince, sage and chilli.
Added to mashed potato on a cottage pie or just any mashed potato.
Roasted butternut and baby spinach salad - roast in chunks with a bit of cinnamon and honey. Then toss while still warm into a big bowl with baby spinach. Add your preferred cheese and nuts - we like walnuts and blue cheese or roasted hazelnuts. Goats cheese and pine nuts is a good option too. Dressing of lemon/mustard/honey.
As a base for roasted veg served on hummus and flatbreads (I like to add tomatoes, aubergine, garlic and chilli to the roasting tray but you can do whatever you like).
Curries (but you already do that).
Boil or steam it then blend it with cream cheese, preferred flavourings and a bit of olive oil then add to pasta with some chopped cooked sausages.
Roasted as a side dish for a roast dinner.
Roasted in smallish chunks then used to make a butternut and feta quiche (haven't done this for a while - this is a great reminder, might do it soon).
Cut in half, remove seeds, then roast in tinfoil until soft then stuff it. I like it stuffed with cooked chopped onion and spinach and a bit of cream.