Ingredients:

• 2 1/2 Tbsp. olive oil
• 1 cup chopped onion
• 2 Tbsp. minced garlic
• 8 oz. white mushrooms, thinly sliced
• 1 tsp. dried basil
• 1 tsp. dried oregano
• 1/2 tsp. red pepper flakes
• 1 1/4 tsp. kosher salt, divided
• 1 (6 oz.) bag fresh baby spinach
• 2 cups shredded cooked chicken
• 2 cups low-sodium chicken stock
• 1/4 cup all-purpose flour
• 2 cups whole milk
• 1/4 tsp. nutmeg
• 1/2 cup shredded Parmesan cheese
• 8 no-boil (oven-ready) lasagna noodles
• 1 1/4 cups shredded mozzarella cheese

Directions: