1. Preheat oven to 350°. Stir together first 6 ingredients and 1 cup pepper Jack cheese. Fold in spinach, artichokes, and crabmeat. Spoon into a lightly greased 2-qt. baking dish. Sprinkle with remaining 1/4 cup pepper Jack cheese.
2. Bake at 350° for 40 minutes or until center is hot and edges are bubbly. Sprinkle with freshly ground pepper to taste. Serve with crackers and assorted vegetables.