2 jars (6 oz. each) marinated artichoke hearts, drained, diced
3/4 cup sour cream
1/4 cup mayonnaise
1/4 cup Parmesan cheese, grated
1 tsp. (or, to taste) dried tarragon leaves (optional)
Combine all ingredients in a medium saucepan and cook over very low heat for approximately 30 minutes. Transfer to a medium serving bowl and serve warm.