Preheat oven to 350º F. Mix all ingredients together, reserving 1/2 cup Parmesan cheese for topping, until well combined and pour into a shallow baking dish. Bake for 20 minutes. Serve warm with chips.
Make-Ahead: Prepare Spinach Artichoke Dip up to baking. Cover tightly with wrap and store in the refrigerator up to a week. When ready to serve, bake as directed and serve warm.