Chocolate Peanut Butter Swirl Fudge

Bahan-bahan (24 porsi)

• ½ cup butter
• ½ cup peanut butter
• ½ teaspoon vanilla extract
• 1⅓ cup powdered sugar
• 7 ounces or ½ cup plus 2 tablespoons, sweetened condensed milk
• 1 cup semi-sweet chocolate chips
• 2 tablespoons butter
• ½ teaspoon vanilla extract