Drain spinach, press between layers of paper towel to remove excess moisture.
Combine spinach, artichoke hearts, and next 5 ingredients in a bowl, stirring well.
Spoon into a lightly greased 11"x7" baking dish. Combine bread crumbs and butter; sprinkle over spinach mixture.
Bake, uncovered, at 375° for 25 minutes. Serve with assorted crackers, bagel chips or breadsticks.