In a large pan on medium heat, heat the liquid from ONE jar of the marinated artichokes. Add the crushed garlic and spinach and stir until the spinach is wilted. Remove from heat and set aside.

Drain the remaining jar of artichokes (discard liquid or save for another recipe) and chop the artichokes from both jars coarsely. Also coarsely chop the water chestnuts.

In a large bowl mix mayo, sour cream and cream cheese until smooth. When smooth add in the Parmesan, cheddar, artichokes, water chestnuts and spinach mixture. Mix thoroughly.

Transfer mixture to a shallow 9 inch dish and bake in the oven at 375 for about 30 minutes or until mixture is bubbly and hot and top is lightly browned.

Serve right away!