Turtle Rice Krispie Treats

Bahan-bahan (16 porsi)

• ¼ cup butter
• 7 cups miniature marshmallows (divided)
• 7 cups Rice Krispies cereal
• 1 ⅓ cups chopped toasted pecans (divided)
• 1 cup semi sweet chocolate chips
• ¼ cup heavy whipping cream
• 5 ½ ounces caramel bits (or 5 ½ ounces caramels unwrapped)
• 2 ½ tablespoons heavy whipping cream