Preheat oven to 400° F.
Combine cream cheese and mayonnaise in large bowl; add creamed spinach, artichokes, Parmesan cheese, onion and pepper. Place in 2-quart baking dish. Combine stuffing and pecans in small bowl; sprinkle over dip.
Bake for 20 to 25 minutes or until hot and lightly browned on top.