Butternut Squash Bread without garlic cinnamon

2 packages active dry yeast 1/2 cup warm water 1 1/4 cups mashed cooked butternut squash 1 cup warm milk (110 to 115 degrees) 2 eggs , beaten 1/3 cup butter[...]

2 cups buttermilk 4 large eggs , separated 2 cups thawed frozen unseasoned, pureed butternut squash 1/3 cup freshly grated parmesan cheese 1 cup stone ground[...]