I too have recently got into Butternut Squash, after finding a recipe in the supplement magazine of a newspaper.
Layer Sliced/Peeled Squash with sliced Potatoe. Bake in covered in the oven until the potaote and squash is soft. Pour in a couple of tablespoons of Double cream, and spinkle with Gruyere Cheese - you can also lay a couple of sages leafs on it. Bake again until cheese is melted and cripsy. - Serve with you main meal.
We have slightly adapted it by using Milk, instead of double cream, and just using normal cheese.
Tip - don't add too much cream/milk or it gets too soggy.
Enjoy!