INGREDIENTS
3 lb
frozen chopped spinach, defrosted (5 (10-ounce) packages)
4 tbsp
unsalted butter
1
chopped yellow onion
1/4 cup
flour
1/4 tsp
grated nutmeg
1 cup
heavy cream
2 cups
milk
1 cup
freshly grated Parmesan cheese
1 tbsp
kosher salt
1/2 tsp
freshly ground black pepper
1/2 cup
grated Gruyere cheese