Heat oven to 350° F.
Mix mayonnaise, cheese, artichoke hearts, chopped green chillies, and garlicup Spoon into 9 inch pie plate.
Bake 20 to 25 minutes or until lightly browned.
Sprinkle onion and tomatoes.
Serve with tortilla chips, crackers or pita bread wedges.
Servings: 2 1/2 cups