To prepare a stuffed roasted butternut squash mushrooms walnuts and herb crust recipe, first remove the skin from the squash and cut it in half lengthwise. Cut each half into quarters. Place the quartered squash halves cut side down on ungreased baking sheet. Bake in the preheated oven for 30 minutes or until squash is tender. Remove from oven and allow to cool for 5 minutes before slicing and serving.