Ingreadient

• 1 (12-ounce) package steam-in-bag broccoli florets
• 1 tablespoon neutral oil, such as canola or avocado
• 1 cup prechopped onion
• 2 (8-ounce) packages presliced mushrooms
• 3 tablespoons all-purpose flour
• 1 ½ cups fat-free milk
• 12 ounces chopped skinless, boneless rotisserie chicken breast (about 3 cups)
• ½ cup plain fat-free greek yogurt
• ¼ cup canola mayonnaise
• ½ teaspoon freshly ground black pepper
• ¼ teaspoon salt
• 2 ounces sharp cheddar cheese, shredded (about 1/2 cup)
• 1 ounce parmesan cheese, grated (about 1/4 cup)