2 tablespoons unsalted butter (for greasing soufflé dishes)
3 tablespoons finely grated parmesan cheese (for dusting soufflé dishes)
3 tablespoons unsalted butter
3 tablespoons unbleached all-purpose flour
1 cup milk
1/2 teaspoon salt
1/4 teaspoon Freshly ground black pepper
  Few grinds of fresh nutmeg
3 cups (about 5 ounces) packed Earthbound Farm Organic Baby Spinach (chopped)
1/2 cup grated Parmesan cheese
4 large egg yolks
6 large egg whites (at room temperature)
1/4 teaspoon cream of tartar