Rice Krispie Crack Bars


Good old Rice Krispie Treats. You know what I’m talking about. That undeniably pleasing confection made by blending marshmallows and puffed rice cereal that has stood the test of time. A tray of these simple, classic dessert bars will make you immediately nostalgic for your childhood. Though I must admit, I think I’ve actually eaten far more of these as an adult than I did as a child. They are a dessert that is in high rotation around this household. Thank heavens that they are really fast and easy to make and lets face it, downright delicious! All crispy and gooey…we’re big fans of the gooey bites around here, so I usually add more mini marshmallows to the mix right before turning it out into the pan. It’s true that one can find a lot of recipes out there which have little variations on the original Rice Krispie treat recipe. And I pretty much love them all. A particular favourite  of mine is adding a little bit of Biscoff cookie butter into the mix. But I think I’ve upped the ante here with these Rice Krispie Cornflake Crack Bars. I may have indeed achieved Rice Krispie Treat nirvana.


So what we’ve got here is the classic Rice Krispie Treat (with a few extra marshmallows added like I normally do…) but it is crowned with a layer of Cornflake Crunch! I’ve been obsessed with Cornflake Crunch ever since I made those Cornflake Chocolate Chip Marshmallow Cookies from the Momofuku Milk Bar cookbook. In that recipe, Chef Tosi calls for adding Cornflake Crunch to the cookie dough and it is a large part of what makes them so irresistible. Luckily the recipe she provides makes more Cornflake Crunch than you need for the cookies. Which is a good thing for me because I can’t stop eating it. I’ve been putting it on my oatmeal, yogurt, ice cream and I may have even been seen lurking around the fridge late at night with tell-tale cornflake crumbs on my jammies. Addictive I tell you!


So considering my recent Cornflake Crunch fascination, it should come as no surprize that they found their way onto a Rice Krispie Treat in my kitchen. Voila! Rice Krispie Crack Bars were born!


Let me tell you, Cornflake Crunch just takes these treats over the top. You’ve still got the delight of the crispy/gooey thing going on, but now you’ve also got that glorious crunchy/sweet/salty/buttery bliss of the Cornflake Crunch added into the mix. Absolutely brilliant! One bite and you’ll be hooked.


Rice Krispie Cornflake Crack Bars

  • Servings: 9 -12 depending on how you slice 'em
  • Difficulty: easy
  • Print


  • 3 Tablespoons butter
  • 1 10 oz. package of mini marshmallows + 1 cup, divided
  • 6 cups Rice Krispies Cereal
  • 1/3 cup Cornflake Crunch (recipe to follow)


In large saucepan melt butter over low heat. Once butter has completely melted, add 10 oz. bag of mini marshmallows and stir to coat with melted butter. Keep pan on heat, stirring marshmallows frequently until completely melted. Remove from heat. 

Add Rice Krispies cereal. Stir until well coated. Add one cup of reserved mini marshmallows and stir until equally distributed.

Using buttered spatula or wax paper evenly press mixture into  a buttered 9 x 9 x 2-inch pan. Working quickly before mixture has cooled, press Cornflake Crunch evenly into top of treats. Allow to cool and then cut into desired sized squares. 

Cornflake Crunch

recipe from: Momofuku Milk Bar Cookbook

yield: 360 grams (4 cups)


  • 170 grams (5 cups) cornflakes
  • 40 grams (1/2 cup) milk powder
  • 40 grams (3 Tablespoons) sugar
  • 4 grams (1 teaspoon) kosher salt
  • 130 grams (9 tablespoons) butter, melted


Heat the oven to 275°F.

Pour the cornflakes in a medium bowl and crush them with your hands to one-quarter of their original size. Add the milk powder, sugar and salt and toss to mix. Add the butter and toss to coat. As you toss, the butter will act as glue, binding the dry ingredients to the cereal and creating small clusters.

Spread the clusters on a parchment or Silpat-lined sheet pan and bake for 20 minutes, at which point they should look toasted, smell buttery, and crunch gently when cooled slightly and chewed

Cool the Cornflake Crunch completely before storing or using in a recipe. Stored in an airtight container at room temperature, the crunch will keep fresh for 1 week; in the fridge or freezer, it will keep for 1 month.


Rice Krispie Crack Bars brought to you by: Runcible Eats (www.leaandjay.com)

4 Responses to Rice Krispie Crack Bars

  1. Sinead says:

    Such a good idea! These look delicious🙂

  2. Yummm! Looks so good🙂

  3. Looks so good! What is milk powder and where do I buy it????

    • liadh1 says:

      Hi Sara – You can buy milk powder or powdered milk in the grocery store. It is usually located near baking goods, or near the hot chocolate mixes etc. But if you can’t find it in the store, you can also order it online from amazon
      I use it often when baking bread and King Arthur Flour carries it as well.
      Good luck finding some!

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