292 calories; 9.6 g fat; 4.7 g saturated fat; 87.3 mg cholesterol; 420 mg sodium; 10.7 g carbohydrate; 3 g fiber; 3.1 g sugar; 42.3 g protein
Heat oven to 375°F. Lightly spray medium skillet with cooking spray. Cook mushrooms and onion in skillet over medium-low heat 4 minutes or until onion is tender; remove from heat.
Add spinach, 1/4 cup mozzarella cheese, and Parmesan cheese; mix well. Set aside.
In large bowl, combine turkey, oats, milk, egg white, Italian seasoning, salt and pepper; mixing lightly but thoroughly. Spoon 2/3 of turkey mixture lengthwise down center of 11 x 7-inch glass baking dish. Form a deep indentation down middle of turkey; fill indentation with reserved spinach mixture.
Top with remaining turkey, forming a loaf. Seal edges to completely enclose spinach filling.
Bake 30 to 35 minutes or until thermometer registers 170°F and juices show no pink color. Remove from oven; sprinkle with remaining mozzarella cheese.
Return to oven 1 to 2 minutes, or until cheese melts. Let stand 5 minutes before slicing.