Butternut connoisseurs know that the best butternut is the largest fruit with a large neck. This is the Ocado roasting squash, with a proportionally smaller seed cavity. It has a sweet, nutty taste and as it matures it become sweeter and richer. Serving Suggestions Butternut can be roasted, toasted, pureed or mashed and can be used in casseroles, breads and muffins. The seeds can be eaten raw but are usually toasted, and the skin is also edible and will soften when roasted.