*To quickly thaw spinach, cut small slit in center of pouch; microwave on HIGH for 2 to 3 minutes or until thawed. Remove spinach from pouch; squeeze dry with paper towels.
**For a more evenly chopped filling, place cooked sausage, onion, mushrooms, turkey and spinach in food processor. Cover; process with on/off pulses until of desired consistency.
Prepare recipe as directed; do not bake. over with foil; freeze. When ready to use, do not thaw; bake, covered, at 350°F. for 1 hour 25 minutes. Uncover; bake an additional 15 minutes or until mixture is thoroughly heated.