1Heat oven to 350°F. In large bowl, beat all ingredients except chips with electric mixer on low speed until well blended. Pour into 13x9-inch (3-quart) glass baking dish.
2Bake 30 to 40 minutes or just until bubbly around edges. Let stand 10 minutes; stir before serving, if desired. Serve with tortilla chips. Store in refrigerator.