Well, I'm envious
I adore butternut squash, and would love to have an excess! I'm not very good at using / following recipes, but hopefully some of my uses might give you inspiration:
My favourite is cubed, tossed with a touch of avocado oil, then roasted until caramelized. A really large squash will give me 2 to 3 meals as a side - and then I end up using any leftovers as an addition to a grain "salad" (think quinoa / black beans / roasted butternut - tossed together with some meat and dressing), or I will use as part of something baked (caramelized butternut squash is one of my favourite "sweeteners").
I usually cube it and freeze it raw, so that I have the option of roasting it from frozen, or I can add as-is to soup or stew recipes and let them cook in the broth.
If I have way too much roasted leftovers, then I puree and freeze. I will add this to muffins or yeast dough. Butternut in the dough and using some berry puree as the filling makes for an outstanding "cinnamon roll" style treat --- or I include onions and garlic in a rye dough with it for a loaf or rolls that make an outstanding contrast for fillings like beef and sauerkraut.
I do a version of the "self-crust pumpkin pie" from the Spark Recipes site using pureed roasted butternut instead of pumpkin - and either using no sweeteners (especially if I'm adding some berries) or using only some blackstrap molasses (for more of a gingerbread flavour) along with some dried fruits.
I've also really enjoyed using some of the frozen puree in various soups and stews and sauces --- adding it as the "thickener" instead of a roux or slurry of flour. It adds a fantastic flavour background, especially with beef, or when mixed with nut butters over pork or chicken.