Stuffed Chicken Breasts with Marasala Cream Sauce

INGREDIENTS

• 1 tablespoon olive oil, divided
• 1 (8-ounce) package pre-sliced mushrooms, finely chopped
• 1/3 cup minced shallot (about 1 small)
• 1 cup chopped fresh baby spinach
• 2 tablespoons chopped fresh parsley
• 1/3 cup dry breadcrumbs
• 1 large egg white
• 1/2 teaspoon salt, divided
• 1/2 teaspoon freshly ground black pepper, divided
• 4 (6-ounce) skinless, boneless chicken breast halves
• 1/4 cup all-purpose flour
• 1/2 cup dry Marsala wine
• 1/2 (1.8-ounce) package white cream sauce mix (such as Knorr)
• 1/2 cup fat-free, less-sodium chicken broth
• 1/2 cup 1% low-fat milk
• 1/2 tablespoon fresh lemon juice