Artichoke Spinach Dip 洋蓟菠菜蘸酱

14 oz canned artichoke hearts, drained chopped
8 oz frozen chopped spinach, thawed drained
2 oz prosciutto, chopped
1 1/2 cup yogurt
1/2 cup mayonnaise
1 cup grated parmesan
1/4 tsp salt
1/8 tsp pepper

mix all ingredients; 350º 30 min