Preheat oven to 350°F.

In a large skillet cook onion, sweet pepper, and garlic in hot oil over medium heat until tender, stirring often; set aside to let cool.

In a large bowl stir together cream cheese, parmesan cheese, milk, mayonnaise, and sour cream. Add onion mixture, spinach and chopped artichoke hearts; stir gently to combine.

Spread mixture into a deep 9-inch pie plate or a 1 1/2-quart baking dish.

Bake about 30 minutes or until bubbly. Serve with bagel chips, corn tortilla chips, toasted bread slices, or toasted pita bread triangles.