The Ultimate Cornflake Marshmallow Cookies – A Sweet & Crunchy Treat!

Chef stuart in his car holding a cornflake cookie

Chef Stu Holding a Cornflake Cookie in his car

If you're looking for a cookie that delivers the perfect balance of crunch, chew, and chocolatey goodness, you've come to the right place! My Cornflake Marshmallow Cookies take everything you love about a classic cookie and add a unique twist. With crispy cornflakes, gooey marshmallows, and rich chocolate chunks, these cookies are an irresistible treat you’ll want to make again and again.

Why You'll Love These Cookies

  1. Perfect Texture: The combination of crispy cornflakes and soft, chewy marshmallows makes every bite satisfying.

  2. Easy to Make: No fancy techniques required—just mix, scoop, and bake!

  3. Rich and Buttery Flavor: Thanks to the right balance of sugar, butter, and cinnamon, these cookies have a deep, warm flavor that keeps you coming back for more.

  4. Crowd-Pleaser: Whether for a holiday party, a weekend baking project, or just a snack, these cookies are guaranteed to be a hit.

Cornflake Cookie on a chopping board

Cornflake Marshmallow Cookies

Ingredients:

  • 2 cups Cornflakes (lightly crushed)

  • 1/2 cup plus 2 tablespoons unsalted butter, room temperature

  • 3/4 cup granulated sugar

  • 3/4 cup brown sugar

  • 1 teaspoon vanilla extract

  • 1 large egg, room temperature

  • 1 and 1/2 cups all-purpose flour

  • 1 teaspoon baking soda

  • 1/2 teaspoon cinnamon

  • Pinch of salt

  • 2 cups mini marshmallows

  • 8oz good Chocolate bars, chopped (milk or dark chocolate, your choice!)

How to Make Cornflake Marshmallow Cookies

Step 1: Preheat & Prep

Preheat your oven to 350°F (175°C). Line a baking sheet with parchment paper.

Step 2: Crush the Cornflakes

Bake the cornflakes for 10 mins. Set aside and light break up.

Step 3: Cream Butter & Sugars

In a mixing bowl, cream the butter, granulated sugar, and brown sugar until light and fluffy (about 2-3 minutes). This step is key to getting the right texture!

Step 4: Add Wet Ingredients

Mix in the vanilla extract and egg, beating until smooth.

Step 5: Combine Dry Ingredients

Whisk together flour, baking soda, cinnamon, and salt in a separate bowl. Slowly add the dry mixture to the wet mixture, stirring until just combined.

Step 6: Fold in the Mix-Ins

Gently fold in the marshmallows, chocolate chunks, and crushed cornflakes. This is where the magic happens! Let chill for 1 hour.

Step 7: Scoop & Bake

Scoop 1/4 cup sized cookie dough balls onto your lined baking sheet, leaving space for them to spread. Bake for 13 minutes until the edges are golden, and the centers look slightly underbaked.

Step 8: Cool & Enjoy

Let the cookies cool for 15 minutes on the baking sheet before transferring them to a wire rack. Then, grab a glass of milk and enjoy!

Tips for the Best Cookies

  • Don’t overmix the dough—this keeps the cookies soft and chewy.

  • Use high-quality chocolate for the best flavor.

  • Let them cool completely before storing them to keep them from becoming too soft.

Final Thoughts

These Cornflake Marshmallow Cookies are everything you want in a dessert—crispy, chewy, chocolatey, and just the right amount of sweet. Whether baking for yourself or sharing with friends, these cookies will surely be a hit. Try them out, and let me know what you think!

Happy Baking! 🍪✨

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