In a large bowl mix the powdered sugar, butter, vanilla extract and peanut butter with spoon until creamy. Then in a small bowl put both bags of chocolate chips and melt in microwave for 2 minutes until melted. Then take the mix and roll into small balls. After you roll mix into small balls dip them into bowl of chocolate until covered. Then place on a cookie sheet. Then place cookie sheet in freezer for 1 hour. After the chocolate balls have hardened place them in bowl and place in refrigerator until ready to serve.