Terri in WI had this at a work function last week and everyone is at her office is raving about it, so the person who made it sent the recipe around. Terri forwarded to me and I've put it here. Enjoy.
1 cup mayo
1 cup sour cream
1 cup parmesan cheese
1 can artichoke hearts, drained and chopped
1/4 tsp pepper
1/4 tsp garlic powder
Combine above ingredients and bake at 350 for 20-30 minutes.
*I don't recommend using reduced fat mayo or sour cream as it tends to separate.