Butternut Squash Tortellini

Ingredients

• 1 butternut squash, about 1/2 pound to 1 pound
• 8 tablespoons unsalted butter, divided
• 3-4 amaretti cookies, crushed with a rolling pin or in a mortar with a pestle
• 1/2 cup grated parmesan cheese, plus more to taste
• 1 whole nutmeg
• a few sage leaves, finely minced, plus 4-6 whole ones
• kosher sallt
• 1 recipe pasta dough (see below)
• 2 cups double-zero flour from italy, plus more, as necessary
• 2 eggs
• 2 egg yolks