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peanut butter cornflake cookies

Cornflake Cookies

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Cornflake Cookies are super addictive, with an absolutely irresistible mix of crunchy cereal flakes, sweet sugar and salty peanut butter! These simple no bake cookies are quick and easy to whip up with just 5 ingredients.
Course Dessert
Cuisine American
Keyword cornflake cookies, peanut butter no bake cookies, special K cookies
Prep Time 10 mins
Cook Time 5 mins
Total Time 15 mins
Servings 24 cookies
Calories 153
Author Kim


  • 1 cup sugar
  • 1 cup light Karo corn syrup
  • 1 cup peanut butter*
  • 4 cups Special K Cereal or Corn Flakes Cereal**
  • 2 teaspoons vanilla extract


  • In a large saucepan, bring sugar and syrup to a boil over medium heat. Do not over cook.
  • Take the pan off the burner and blend in peanut butter. Once smooth, stir in cereal and vanilla.
  • Once cereal is fully coated, use a spoon to drop the cookies onto parchment or wax paper to cool.
  • Once completely cool, store in an airtight container at room temperature for about a week.


*I don't recommend using a natural peanut butter or one that's runny. I like to use Jif or Skippy peanut butter.
**We really love Special K cereal for these cookies! Corn Flakes are less puffy, so if you use that variety of cereal, increase the amount to 6 cups. 
Photos from Molly at Yes to Yolks.


Serving: 1cookie | Calories: 153kcal | Carbohydrates: 25g | Protein: 3g | Fat: 5g | Saturated Fat: 1g | Sodium: 92mg | Potassium: 78mg | Fiber: 1g | Sugar: 21g | Vitamin A: 83IU | Vitamin C: 1mg | Calcium: 6mg | Iron: 2mg