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Instant Pot Cornflake Cookies Recipe (with video)

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Have you tried making Instant Pot Cornflake Cookies? A classic no bake cornflake cookie that is sweet and crunchy. 

peanut butter cornflake cookies on parchment paper

If you love no bake desserts try my no bake s’mores pie,circus animal no churn ice cream, or strawberry Jello pie

Cornflake Cookies

My mom made these cookies a lot when we were kids. Chewy, crunchy, sweet, and so addictive. It was hard to eat just one! 

The cornflakes hold up well so when you bite in it offers a crunchy and chewy texture. They certainly one of a kind. We will never turn down peanut butter cornflake cookies in this house.

ingredients in bowl for cornflake cookies

Can I Make These Cookies On The Stovetop

Absolutely! I just wanted to use the saute feature on the Instant Pot for ease. I loved how quick these cookies came together.

But, if you don’t own an Instant Pot go ahead and just heat the mixture on the stove and follow the same instructions!

How To Make

cooking peanut butter cookies in instant pot

Step 1: Start by turning your Instant Pot on to the saute feature. Then mix in your peanut butter, granulated sugar and corn syrup.

Step 2: With a wooden spoon you will continuously mix the mixture until it thins up and begins to boil.

no bake cookie mixture in an Instant Pot with wooden spoon

Step 3: Once it has boiled, and thinner, you will remove from heat, add in vanilla and cornflakes and mix until well combined.

no bake peanut butter cornflake cookies on a table

Step 4: With spoons, you will scoop out your cookies and place on wax paper or even aluminum foil to allow them to set up.

How Long Do These Cookies Need To Set Up

This no bake cornflake cookies recipe takes only about 10 minutes to set up. It is a thicker consistency so once you spoon out your cornflake candy it will harden up a bit and you can serve.

The longer the cookies set the harder they will get, which offers a more chewy texture.

holding a cornflake cookie with bite taken out

Why Make This As An Instant Pot Dessert

  • A one-pot dessert
  • Heats Up Quickly for a fast prep on making cookies
  • Portable to move where you want to make cookies at in the kitchen
  • Simple to use
  • Works great
  • Less energy used vs a stove top recipe
pouring chocolate over the top of a cookie

Variations to Cornflake Cookies

  • Melt chocolate chips and drizzle over the top
  • Add sprinkles to fit any holiday you want
  • Mix in butterscotch chips for a twist of flavor
  • Stir in mini chocolate chips at end for a chocolate peanut butter cookie
  • Use almond extract instead of vanilla for a swap of flavor

The list goes on and on with this recipe. These cornflake cookies are truly easy to make. Great for an easy dessert for the family, potluck dessert, or even a cookie swap.

Storing Cookies

These cookies can be stored in an airtight container or bag on the counter. They will store best at room temperature.

The cornflake peanut butter cookies will last around 3-4 days. Each day you will find the texture changes a bit and they become a bit chewier in texture. Use your best judgement in terms of when to toss out.

Can You Freeze

Unfortunately, these cookies will not freeze well. When you would thaw out the cornflake cookies they would become soggy. So, only make what you plan to eat.

homemade cornflake cookies (1)

Cornflake Cookies

Yield: 24 cookies
Prep Time: 5 minutes
Cook Time: 5 minutes
Total Time: 10 minutes

Cornflake Cookies are a peanut butter crunchy cookie that is made right in the Instant Pot. You can ake these no bake peanut butter cornflake cookies on the stovetop as well.


  • 6 cups plain cornflakes (not frosted)
  • 1 cup granulated sugar
  • 1 cup corn syrup, light
  • 1 cup creamy peanut butter
  • 1/2 teaspoon vanilla
  • 1 cup milk chocolate chips (optional


  1. Turn your Instant Pot to saute, or your stovetop to medium heat. Pour in your corn syrup, peanut butter, and granulated sugar.
  2. With a spoon, you want to constantly stir, so that the mixture does not burn. You will want to mix this up until the peanut butter mixture begins to boil.
  3. Once it boils, remove from heat. I just took my pot liner out and sat on the heating pad.
  4. Quickly stir in vanilla followed by the cornflakes. Gently stir in your mixture until well combined.
  5. Once you are done take two spoons and scoop and drop pieces of the cookie!
  6. Then allow cookies to cool a bit. You can serve as is, melt chocolate chips to drizzle over the top, or even sprinkles.
  7. These cornflake cookies are so easy to make and highly addictive.

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Nutrition Information:
Yield: 24 Serving Size: 1 cookie
Amount Per Serving: Calories: 198Total Fat: 7gSaturated Fat: 2gTrans Fat: 0gUnsaturated Fat: 4gCholesterol: 2mgSodium: 117mgCarbohydrates: 32gFiber: 1gSugar: 24gProtein: 3g

This information is automatically calculated by third-party software, including but not limited to the Create or Bake Me Some Sugar. For accurate nutrition, I suggest running the ingredients in your own system to get a more accurate reading. Nutritional information is approximate and automatically calculated, and should only be viewed as an indication.

no bake peanut butter cornflake cookies on wax paper on table

Are you a fan of cornflake cookies?

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