Holiday Recipes/ Sweets

Cornflake Squares

Cornflake Squares - Cornflakes mixed with marshmallow and almonds - Domestic Dreamboat

When it comes to Christmas baking, there are generally two categories of goodies I make. There are the new recipes I try, either because I saw the recipe and just needed to try it, or because I’ve tried it somewhere and loved it. These treats may or may not make the cut for next year. This year I tried three new goody recipes, probably only one of which will survive to next year. Not that the others were bad, just not good enough to make the Christmas cut.

The other category of treats I make are the tried and true recipes. These ones might have been around for the past couple of years, or they may have held strong for many years, passed down through the generations.

Chewy Marshmallow Cornflake Squares with Slices Almonds - Ingredients

Cornflake Squares is that kind of recipe. Just like my favorite dinner buns, I have been eating cornflake squares pretty much as long as I can remember. They generally only get made at Christmas time, usually by my Granny. They are – and have been for many, many years – my absolute favorite Christmas treat. And there’s certainly no shortage of treats to choose from – many much more exotic and complex than these.  I don’t know where the recipe originally came from, but I do know that “winging” the recipe and trying to remember the correct ratios of butter/marshmallow/cereal does not work. The recipe needs to be made as written to turn out so delicious. Believe me, I’ve tried and failed several times. In this case, more marshmallow does not equal better.

Butter coated marshmallows
The process to make these is just as simple as for any marshmallow based cereal bar. Melt butter. I usually do this in the microwave. Add marshmallows. Melt marshmallows – again, the microwave is your friend.

Melted marshmallow

When the marshmallows are melted, stir them into the butter so they’re completely mixed. Stir in the vanilla. Don’t forget this step. It’s important.

Mixed cornflakes

Stir in the cereal and almonds. It’s a good arm workout. When it’s completely mixed, spread it into a greased baking pan and press firmly. If you don’t press the mixture in, the bars will likely fall apart. Try not to pick at the clusters of marshmallowy cereal goodness while you’re waiting. But if you do, make sure you do it evenly so no one notices.

Chewy Marshmallow Cornflake Squares with Slices Almonds

When they’re nice and firm, cut them up into squares. Keep them in an airtight container or bag. They will keep in the freezer for several weeks. But if your family is anything like mine, these will be the first things to go on the Christmas goody tray.

Chewy Marshmallow Cornflake Squares with Slices Almonds

3.67 from 3 votes
Cornflake Squares
Prep Time
15 mins
Total Time
15 mins
These cornflake squares are one of my absolute favorite treats ever! They are just as easy to make as any cereal bars, but somehow taste so much better.
Course: Dessert
Servings: 36
Calories: 85 kcal
Author: Domestic Dreamboat
  • 1 cup salted butter (2 sticks), see note below
  • 1 pound mini marshmallows (regular marshmallows will work but take longer to melt), 16oz
  • 1 1/2 teaspoons vanilla
  • 8 cups cornflakes
  • 10 ounces sliced almonds (200 grams)
  1. Grease a 9x13" baking dish, set aside.
  2. Melt butter in a large bowl on high heat in the microwave. Melt in 30 second increments, checking the butter and swirling the bowl after each 30 seconds. Depending on the starting temperature of your butter, it may only take 30 seconds.
  3. Stir the marshmallows into the melted butter to coat. Return the bowl to the microwave to melt the marshmallows, again in 30 second increments at high heat. Stir after each 30 seconds. When marshmallows are melted, stir well until butter is completely incorporated into the marshmallow. Stir in vanilla.
  4. Fold cornflakes and almonds into the marshmallow mixture. Stir well until uniform. Transfer the mixture to the prepared baking dish. Press firmly into the dish, but not so firmly as to crush the cornflakes (this will be very sticky! Use the back of a large, oiled spoon or oil the palms of your hands). Let set at room temperature. Once the mixture has set, cut into squares. Store in an airtight container or bag at room temperature or in the freezer.
Recipe Notes

Either salted or unsalted butter can be used. Salted butter gives a sweet and salty element but has a higher sodium content.
Recipe can easily be halved to fit into a 9x9" pan.

cornflake square nutrition facts

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  • Reply
    Thalia @ butter and brioche
    December 20, 2014 at 4:37 PM

    Definitely craving a couple of these cornflake squares to devour right now, they look great!

  • Reply
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    December 30, 2014 at 8:02 AM

    […] Cornflake Squares from Domestic […]

  • Reply
    December 20, 2015 at 12:24 AM

    I was so excited to make these… Didn’t think the marshmallow sounded like enough so put more in to make it stickier. What a flop!!! Even with the extra marshmallow these are completely crumbling as you prey to pick it up!!!! So disappointed!!!!

    • Reply
      December 20, 2015 at 9:19 PM

      I’m sorry these didn’t work out for you! I’m not sure what would have gone wrong, except sometimes if you don’t press them into the pan, they don’t stick together.

  • Reply
    December 22, 2015 at 8:13 AM

    Hi Carissa,
    I actually went googling for this recipe because my mom couldn’t remember it..(from 40 yrs ago)..and I wanted to make it for tomorrow.
    I made it exactly as you said with the addition of 1 cup of slivered almonds because that’s how she used to make them. Proportions of ingredients were perfect. This stuff is sticky beyond belief but won’t hold together until compressed (as mentioned in the recipe) and at least slightly cooled.

    I tamp my down into a buttered Dixie cone (3 thick with a lick of melted butter slathered every 3 or 4) to make little trees. My mom use to decorate with green/red candied cherries and those little silver candies that look like ball bearings, but I didn’t have any.. and I don’t like the cherries.. but they definitely look better decorated than my plain ones.. I don’t know about taste better though.. thanks for the recipe Carissa

    • Reply
      December 22, 2015 at 10:28 AM

      Cute idea to make them in Dixie cones! I’ll have to try that some day!

  • Reply
    Holly H.
    May 4, 2017 at 1:42 AM

    I was so happy to find this recipe! I vaguely remember buying a pre-packaged corn flake treat (in the aisle with the Rice Krispie Treats) at our local convenience store during my childhood. It was my go to “treat” when my grandpa would take us fishing. He would let us go and pick out a snack and a drink, and this was what I always got… Until they stopped making them.

    I’ve occasionally thought about them, but I’ve never taken the time to look for a recipe. When I did, most all of the recipes I found included peanut butter (which I knew wasn’t right).

    I did add a bit of coconut, because that was part of the bar that I remember. Corn Flakes, almonds, coconut. I also used 20 ounces of marshmallows… because I had two ten ounce bags, and I didn’t want to leave 4 ounces leftover… Plus I figured that since I was adding a bit of coconut, it might help bind the extra.

    Thanks so much for providing this recipe which (with my tiny modifications) reminds me so much of my childhood! 🙂

    • Reply
      May 4, 2017 at 6:49 AM

      I’m so glad the recipe reminds you of childhood! I didn’t realize cornflake squares were ever a packaged treat.

  • Reply
    Honey Harrison
    July 3, 2017 at 5:39 PM

    Not too be rude but this is not how you make corn flake tart from where I am from!

    • Reply
      July 3, 2017 at 6:18 PM

      Perhaps they are two completely different recipes. After all, these are Corn Flake Squares, not corn flake tart.

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