Peanut Butter Cornflake Cookies

Peanut butter cornflake cookies

 The Spruce / Leah Maroney

  • Total: 20 mins
  • Prep: 10 mins
  • Cook: 10 mins
  • Cool: 30 mins
  • Yield: 18 cookies (serves 9)

These peanut butter cornflake cookies could not be easier to make. They are full of peanut butter and chocolate flavor, and come together in less than 10 minutes. Crunchy, chewy, salty, and sweet—they satisfy every craving.

This is a great recipe to make with kids, who can easily form the balls (under supervision) and drizzle chocolate over the top. Add sprinkles for extra fun.

Serve them with a cold glass of milk for an indulgent afternoon treat. You can also flatten the cookies when forming them, then turn them into ice cream sandwiches. Stuff some softened ice cream between two of the flattened cookies and freeze them on a wax-paper-lined baking sheet until firm.


  • 7 cups cornflake cereal
  • 1 cup sugar
  • 1 cup light corn syrup
  • 1 teaspoon vanilla extract
  • 1 cup creamy peanut butter
  • 1/2 cup semisweet chocolate chips

Steps to Make It

  1. Gather your ingredients. Place the cornflakes in a large bowl.

    pb cornflake cookies
    Leah Maroney 
  2. Heat the corn syrup and sugar in a sauce pan. Gently stir the sugar mixture. Do not allow it to come to a boil. Cook the mixture until the granulated sugar dissolves, about 3 to 5 minutes. You can check to see if the sugar has dissolved by lifting a spatula out of the pan and seeing if you can still see the granules. There will be small bubbles that form throughout the mixture.

    pb cornflake cookies
     Leah Maroney
  3. Remove the pan from the heat. Whisk in the peanut butter and vanilla extract until completely combined and smooth.

    pb cornflake cookies
     Leah Maroney
  4. Pour the peanut butter mixture over the top of the cereal and gently stir until the cornflakes are completely coated in the peanut butter mixture. Be careful not to completely crush the corn flakes. You can put half the cornflakes in the bowl and mix in half of the peanut butter mixture, then top it with the remainder of the cornflakes and peanut butter mixture.

    pb cornflake cookies
     Leah Maroney
  5. Using 2 spoons, scoop dollops of the batter onto a parchment-lined baking sheet.

    pb cornflake cookies
     Leah Maroney
  6. Melt the chocolate in the microwave in 30-second increments until smooth and completely melted.

    pb cornflake cookies
     Leah Maroney
  7. Drizzle the melted chocolate over the top of the cornflake balls. Allow cookies cool for 30 minutes or until completely hardened. Serve or store in an airtight container.

    pb cornflake cookies
     Leah Maroney


There are so many possibilities with these cookies.

  • Mix in 1/4 cup of melted chocolate or Nutella into the peanut butter mixture.
  • Top with crumbled bacon.
  • Top with crushed peanuts.
  • Top with mini chocolate chips.
  • Use different cereals, like Rice Krispies.
  • Mix in mini marshmallows with the cereal before coating them in the peanut butter mixture.