INGREDIENTS
2
lbs Baby spinach
1
Yellow onion, small
2
Zucchini (about 1 pound), medium
8 oz
No-boil lasagna noodles
1/4 cup
All purpose flour
1/4 tsp
Black pepper, ground
1/4 tsp
Nutmeg
2 tsp
Salt, coarse
1/4 cup
Olive oil
4 tbsp
Butter, unsalted
1 qt
Milk
6 oz
Mozzarella
1
packed cup Parmesan, grated
1/3
packed cup Pecorino romano, grated