Preheat oven to 350ºF.

Boil lasagna noodles then rinse with cold water and set aside.

Melt butter. Cook onion and garlic until tender.

Add flour and salt. Bring to a simmer.

Mix in broth and milk. Boil for 1 minute, stirring constantly.

Stir in 2 cups mozzarella and 1/2 cup parmesan cheeses.

Stir in basil, oregano, and salt. Remove from heat.

Spread 1/3 of sauce in the bottom of baking dish.

Layer one: 3 noodles, ricotta cheese, and chicken.

Layer two: 3 noodles, 1/4 sauce, spinach, 2 cups mozzarella cheese, and 1/2 cup parmesan cheese.

Layer three: remaining 3 noodles, remaining sauce, and parsley.

Bake for 35-40 minutes.