Butternut Squash and Sage Lasagna

INGREDIENTS

3 1/2

lbs Butternut squash

1/3 cup

Sage, loosely packed fresh leaves

Egg yolks, large

1 1/4 cups

Chicken or vegetable stock, homemade or store-bought low-sodium

Lasagna noodles, Fresh

Nutmeg

Salt and freshly ground pepper, Coarse

2 tbsp

Olive oil, extra-virgin

2 tbsp

Butter, unsalted

1/2 cup

Heavy cream

1/2 lb

Mozzarella cheese, fresh

4 oz

Parmesan cheese

1 lb

Whole-milk ricotta cheese