Peanut Butter Rice Krispy Treats

Bahan-bahan (16 porsi)

• ¼ cup butter
• ½ cup creamy peanut butter
• 8 cups miniature marshmallows (about 1 1/2 (10 ounce) bags of marshmallows)
• 6 cups crisp rice cereal
• optional: additional 2 cups miniature marshmallows
• 1½ cups assorted Reese's cups, mini-size or roughly chopped miniature or regular size cups
• ½ cup semi-sweet chocolate chips (optional)
• 1 teaspoon refined coconut oil or vegetable oil (optional)