Momofuku Milk Bar’s Cornflake Cookies You’ll Ever Make at Home
Craving the iconic Milk Bar Cornflake Cookie but can’t make it to the bakery? This copycat recipe brings every buttery, marshmallow-studded, crunchy bite straight to your kitchen — and honestly, it might be even better fresh from your own oven.
I still remember the first time I tried one of these cookies at Momofuku Milk Bar — I stood on the sidewalk in New York and ate the whole thing before I even made it to the corner. That combination of toasted cornflake crunch, gooey mini marshmallows, and chocolate chips? Pure magic. I’ve been making this famous bakery recipe at home ever since, and today I’m sharing everything you need to nail it.
Table of Contents
Why You’ll Be Obsessed With These Cookies
Let’s be real — this isn’t your average drop cookie. Momofuku Milk Bar’s Cornflake Cookies are a full experience. The secret is the Cornflake Crunch: buttery, toasted, malted clusters of cereal that add this incredible caramelized crunch you just can’t get anywhere else. Fold those clusters into a deeply creamy, slightly salty dough with mini chocolate chips and marshmallows, and you’ve got something truly unforgettable.
These cookies are thick, chewy in the center, a little crispy on the edges, and loaded with texture in every single bite. If you love bakery-style cookies, you need to add this Milk Bar Cornflake Cookie to your life immediately. Pair it with a glass of cold milk and try not to eat five of them — I dare you.
Momofuku Milk Bar’s Cornflake Cookies
Equipment
- Stand mixer or hand mixer
- Large mixing bowl
- Baking sheet
- Parchment paper
- 2-oz cookie scoop or ice cream scoop
- Rubber spatula
- Plastic wrap
Ingredients
Cornflake Crunch
- 5 cups Cornflakes
- ½ cup malted milk powder
- 3 tablespoons granulated sugar
- 1 teaspoon salt
- 9 tablespoons unsalted butter 1 stick plus 1 tablespoon, melted
Cookie Dough
- 1 cup unsalted butter 2 sticks, room temperature
- 1¼ cups granulated sugar
- ⅔ cup light brown sugar packed
- 1 large egg
- ½ teaspoon vanilla extract
- 1½ cups all-purpose flour
- ½ teaspoon baking powder
- ½ teaspoon baking soda
- 1½ teaspoons salt
- 3 cups Cornflake Crunch from recipe above, fully cooled
- ⅔ cup mini chocolate chips
- 1¼ cups mini marshmallows
Instructions
- Make the Cornflake Crunch: Preheat your oven to 275°F. Line a baking sheet with parchment paper.
- In a large bowl, use your hands to crunch the cornflakes into smaller, uneven pieces. Add the malted milk powder, sugar, and salt and toss to combine.
- Pour in the melted butter and toss well until all the flakes are coated and small clusters begin to form. Spread the mixture onto your prepared baking sheet in an even layer.
- Bake for about 20 minutes, until the clusters are golden, toasty, and crunchy. Let cool completely before using. Store any leftovers in an airtight container.
- Make the Cookie Dough: Line one or two baking sheets with parchment paper. In the bowl of a stand mixer or with a hand mixer, cream the room-temperature butter, granulated sugar, and brown sugar together on medium speed for 2–3 minutes until light and fluffy. Scrape down the sides of the bowl.
- Add the egg and vanilla extract and continue mixing for about 7 minutes, until the mixture is very pale and almost whipped-looking. This long cream is key to the iconic Milk Bar cookie texture — don’t cut it short.
- Reduce the mixer speed to low. Add the flour, baking powder, baking soda, and salt all at once. Mix until just combined — stop the moment you no longer see dry streaks. Do not overmix.
- With the mixer still on low, add the 3 cups of completely cooled Cornflake Crunch and the mini chocolate chips. Mix until just incorporated. Then gently fold in the mini marshmallows by hand with a spatula, keeping them whole.
- Scoop and Chill: Using a 2-oz cookie scoop, portion about ⅓ cup of dough per cookie onto the prepared baking sheets, leaving about 4 inches of space between each. Use your palm to gently pat the tops flat.
- Wrap the baking sheets tightly in plastic wrap and refrigerate for at least 2 hours, or up to one week. Do not skip this step — chilling keeps the cookies thick and develops a deeper flavor.
- Bake: When ready to bake, preheat the oven to 375°F. Bake the chilled cookies for 9–10 minutes, until the edges are just beginning to turn golden. The centers will look slightly underdone — that’s perfect.
- Let the cookies cool completely on the baking sheet before transferring to an airtight container. Moving them too soon may cause them to fall apart.
Notes
Ingredients
For the Cornflake Crunch
| Ingredient | Amount |
|---|---|
| Cornflakes | 5 cups |
| Malted milk powder | ½ cup |
| Granulated sugar | 3 tablespoons |
| Salt | 1 teaspoon |
| Unsalted butter, melted | 9 tablespoons (1 stick + 1 Tbsp) |
For the Cookie Dough
| Ingredient | Amount |
|---|---|
| Unsalted butter, room temperature | 1 cup (2 sticks) |
| Granulated sugar | 1¼ cups |
| Light brown sugar, packed | ⅔ cup |
| Large egg | 1 |
| Vanilla extract | ½ teaspoon |
| All-purpose flour | 1½ cups |
| Baking powder | ½ teaspoon |
| Baking soda | ½ teaspoon |
| Salt | 1½ teaspoons |
| Cornflake Crunch (from above) | 3 cups |
| Mini chocolate chips | ⅔ cup |
| Mini marshmallows | 1¼ cups |
Quick tip: mini marshmallows and mini chocolate chips are non-negotiable here. Regular-sized ones throw off the texture ratio in a big way.
How to Make Momofuku Milk Bar’s Cornflake Cookies
Step 1: Make the Cornflake Crunch First
Preheat your oven to 275°F. In a large bowl, use your hands to crunch the cornflakes into smaller pieces — think rough crumbles, not dust. You want variety in the sizes for that signature texture.
Add the malted milk powder, sugar, and salt to the crushed cornflakes and toss everything together. Pour in the melted butter and mix until all the flakes are coated and little clusters start forming. This is the good stuff — those clusters are going to be your secret weapon.
Spread the mixture onto a parchment-lined baking sheet in an even layer and bake for about 20 minutes, until the clusters are golden and smell toasty and nutty. Let them cool completely before adding to the dough. (You can make these ahead and store them in an airtight container — they’re also dangerously good on their own as a snack.)
Step 2: Cream the Butter and Sugars
Line one or two baking sheets with parchment paper and set aside. In the bowl of a stand mixer (or with a hand mixer), beat together the room-temperature butter, granulated sugar, and brown sugar on medium speed for 2–3 minutes, until light and fluffy. Scrape down the sides of the bowl.
Add the egg and vanilla extract, then keep mixing for about 7 minutes. Yes, seven whole minutes. This long cream is what gives Milk Bar cookies their iconic texture — don’t skip it or cut it short. The mixture will turn very pale, almost whipped-looking, and that’s exactly what you want.
Step 3: Add the Dry Ingredients
Reduce the mixer speed to low and add the flour, baking powder, baking soda, and salt all at once. Mix just until combined — the second you don’t see dry streaks, stop. Overmixing here leads to tough cookies, and nobody wants that.
Chef’s note: “Just combined” really means it. A few extra seconds of mixing can make the difference between a tender, chewy cookie and a dense one.
Step 4: Fold In the Good Stuff
Keep the mixer on low and add 3 cups of your completely cooled Cornflake Crunch along with the mini chocolate chips. Mix until just incorporated. Then, with a spatula or by hand, gently fold in the mini marshmallows. Be gentle here — you want the marshmallows to stay whole and fluffy, not get mushed into the dough.
At this point the dough is going to look absolutely ridiculous in the best possible way. It’s chunky, loaded, and smells incredible.
Step 5: Scoop, Flatten, and Chill
Using a 2-oz cookie scoop or about ⅓ cup of dough per cookie, scoop the dough onto your prepared baking sheets with about 4 inches of space between each one. Use your palm to gently pat the tops flat — they should look like thick, rustic pucks.
Wrap the baking sheets tightly in plastic wrap and refrigerate for at least 2 hours, and up to a full week. This chilling step is crucial for the Momofuku Milk Bar’s Cornflake Cookies to hold their shape and develop that deep, rich flavor. If you’re planning a party, you can scoop these days ahead and bake them fresh the day of. Talk about a stress-free hosting win.
Step 6: Bake to Perfection
When you’re ready to bake, preheat your oven to 375°F. Bake the cold cookies for 9–10 minutes, until the edges are just starting to turn golden brown. They’ll look slightly underdone in the center — that’s perfect. They firm up as they cool.
Let the cookies cool completely on the pan before moving them. Moving them too soon means they might fall apart (learned that one the hard way). Once cooled, transfer to an airtight container and try to show some self-control.
Expert Tips, Variations & Troubleshooting
Tips for the Best Milk Bar Cornflake Cookie
Don’t skip the chill time. This is the most common mistake people make. Cold dough spreads less and bakes into a thicker, chewier cookie. Two hours is the minimum; overnight is even better.
Use room-temperature butter. If your butter is too cold, it won’t cream properly. If it’s too soft or melted, the dough will be greasy. You should be able to press a finger into it and leave an indent — that’s the sweet spot.
Toast the Cornflake Crunch until it’s actually crunchy. Under-toasted crunch will go soggy in the cookies and lose all its magic. Give it a full 20 minutes at that low temperature and trust the process.
If you love bar-style baked goods with similar butterscotch-y vibes, you might also enjoy these easy cinnamon sugar blondies — they scratch a very similar itch.
Fun Variations to Try
Go chocolate-forward: Swap the mini chocolate chips for dark chocolate chunks for a more intense, bittersweet flavor that plays beautifully against the sweet marshmallows.
Add peanut butter: Stir in ¼ cup of creamy peanut butter with the butter and sugars for a nutty twist on this famous bakery recipe.
Make it a midnight cookie situation: If you’ve ever heard of the Midnight Cookies recipe trend where people bake late-night batches for that just-baked gooey experience — this dough is made for it. Bake one or two at a time straight from the fridge at midnight and thank me later.
Troubleshooting Common Issues
Cookies spreading too much? Your dough probably wasn’t cold enough. Pop the sheet back in the fridge for another 30 minutes before baking.
Marshmallows burning? If marshmallows on the edges are browning too fast, tent the pan loosely with foil for the last few minutes of baking.
Cornflake Crunch not clumping? Make sure your butter is fully melted and you’re really tossing everything together well. The butter needs to coat every flake to form those clusters.
Storage Instructions
| Storage Method | How Long | Notes |
|---|---|---|
| Airtight container at room temperature | Up to 5 days | Best within the first 2 days for max crunch |
| Refrigerator (unbaked dough) | Up to 1 week | Wrapped tightly in plastic wrap |
| Freezer (unbaked dough) | Up to 2 months | Freeze scooped dough on a sheet, then transfer to a bag |
| Freezer (baked cookies) | Up to 1 month | Thaw at room temperature; re-warm in oven if desired |
Reheating tip: Pop a baked cookie into a 300°F oven for 4–5 minutes to revive that just-baked warmth and get the marshmallows a little gooey again. It’s a total game-changer.
No-waste idea: Got leftover Cornflake Crunch? (You will — the recipe makes more than you need.) Sprinkle it over ice cream, yogurt parfaits, or even oatmeal. It’s basically the world’s best granola.
Nutritional Information
Approximate values per cookie (based on approximately 16 cookies per batch):
| Nutrient | Per Cookie |
|---|---|
| Calories | ~420 kcal |
| Total Fat | ~22g |
| Saturated Fat | ~13g |
| Carbohydrates | ~54g |
| Sugar | ~32g |
| Protein | ~4g |
| Sodium | ~390mg |
Nutritional values are estimates and will vary based on specific ingredients and brands used.
Momofuku Milk Bar’s Cornflake Cookies FAQs
Can I use regular-sized marshmallows instead of mini?
You can cut them up, but honestly it’s a bit of a pain and the pieces tend to be uneven. Mini marshmallows distribute way more evenly through the dough and melt into little pockets of gooey goodness in the oven. If minis are your only option, go for it — just snip them with kitchen scissors.
What is malted milk powder and can I skip it?
Malted milk powder is what gives the Cornflake Crunch that deep, almost caramel-like flavor — it’s a big part of what makes this Milk Bar Cornflake Cookie taste like the real deal. You can find it in most grocery stores near the cocoa powder or hot drink mixes (Carnation and Ovaltine both work). Don’t skip it if you can help it, but if you’re truly stuck, you can leave it out — the crunch will still be delicious, just a little less complex.
Can I make the dough and freeze it for later?
Absolutely — this is one of the best things about this recipe. Scoop the dough onto a parchment-lined sheet, freeze until solid, then transfer the frozen scoops to a zip-lock bag. When you’re ready to bake, just pull out however many cookies you want and bake from frozen, adding a couple of extra minutes to the bake time. Fresh cookies whenever the craving hits? Yes please.
Why do I need to chill the dough for so long?
The chilling step does two big things: it keeps the cookies from spreading into flat puddles in the oven, and it lets the flour fully hydrate so the flavors deepen and develop. Two hours is the minimum, but if you can chill the dough overnight, the cookies will taste noticeably more complex and bakery-quality. It’s also what makes this a great make-ahead recipe for parties or gifting.
Can I make these gluten-free?
You can try swapping in a 1:1 gluten-free all-purpose flour blend and gluten-free cornflakes (standard cornflakes often contain barley malt). The texture may vary slightly, but the results can still be really good. Make sure your malted milk powder is also gluten-free, or substitute with coconut milk powder for a similar creamy depth. If you’re experimenting with alternative baking, you might also love these cottage cheese lava cakes — a surprisingly delicious gluten-free-friendly dessert.
Give These Cookies a Try!
If you’ve been dreaming about recreating Momofuku Milk Bar’s Cornflake Cookies at home, this is your sign to just go for it. Yes, there are a couple of steps involved — but none of them are hard, and the payoff is SO worth it. These cookies are the kind of thing people ask for the recipe after the first bite.
Made these? I’d love to hear how they turned out! Drop a comment below and let me know your thoughts. And if you share them on Pinterest, tag me — I want to see those gorgeous, chunky, golden cookies on my feed. Happy baking! 🍪
