Buckeye Crunch Bars

Bahan-bahan (20 porsi)

• 1 stick (8 tablespoons) salted butter, at room temperature
• 1 3/4 cups + 3 tablespoons creamy peanut butter
• 2 teaspoons vanilla extract
• 2 1/2 - 3 cups confectioners sugar, using more or less to your taste
• 12 ounces milk or semi-sweet chocolate, chopped
• 20 -24 pretzel twists