Butternut Squash and Sage Soup without nutmeg milk

1 tablespoon butter 1 tablespoon olive oil 2 large onions , chopped into 1-inch squares (about 4 cups) 3 tablespoons fresh sage , chopped or 1 tablespoon[...]

1 1/2 lbs butternut squash 1 1/2 tablespoons butter , divided 1/2 cup shredded mozzarella cheese 1 medium onion , diced 3/4 cup dry breadcrumbs 1/4 teaspoon[...]

5 tablespoons unsalted butter 1/4 teaspoon crushed red pepper flakes 1 1/2 cups butternut squash 1/4 cup amaretto cookie crumbs salt 2 egg yolks 1/2 cup[...]