Pre-heat oven to 350 degrees F.
Heat enchilada sauce to a bare simmer. Pour into a shallow pan or dish.
Mix turkey, 2 cups cheese, onions, salt and pepper together in a large bowl.
Pour 1/4 cup enchilada sauce in the bottom of each baking dish, just to coat bottom.
Soak tortillas, 2 or 3 at a time in enchilada sauce to soften.
Place a scant 1/3 cup of filling in the middle of each tortilla, roll and place, seam side down in baking dish, nestling enchiladas next to each other.
Top with remaining sauce and 2 cups cheese. Cover with aluminum foil and bake for 20-25 minutes or until hot and bubbly.
Serve with sliced green onions, olives and sour cream.