Sometimes the simplest recipes are the ones that leave the biggest impression, and this 3-Ingredient Cornflake Brittle is no exception. Made with pantry staples like cornflakes, butter, and brown sugar, this recipe delivers a crunchy, buttery, toffee-flavored treat that’s irresistibly delicious. Whether you need a quick snack to impress guests or a fun treat for the family, this brittle is perfect for any occasion.
Growing up, my mom always loved recipes that were quick to whip up but tasted like they took hours. This cornflake brittle was one of her go-to snacks for holiday gatherings and unexpected visitors. I remember sneaking pieces straight off the baking tray when she wasn’t looking! It’s a recipe that brings back sweet memories and is now a favorite in my own kitchen too.
What Is 3-Ingredient Cornflake Brittle?
Cornflake brittle is a caramelized, crunchy snack made by coating crispy cornflakes in a rich toffee mixture and baking them to golden perfection. The result is a sweet and salty treat that has all the satisfying crunch of a brittle without the hassle of candy thermometers or complicated steps. You can keep it simple with the classic three ingredients or take it up a notch with a chocolate coating for extra indulgence.
Why Our 3-Ingredient Cornflake Brittle Is the Best
Our Cornflake Brittle stands out because it’s easy to make, requires minimal ingredients, and delivers maximum flavor. The rich caramel coating paired with the light crunch of cornflakes is a match made in snack heaven!
Ingredients Notes for 3-Ingredient Cornflake Brittle
Each ingredient in this 3-Ingredient Cornflake Brittle plays a role in creating its addictive flavor and texture.
- Cornflakes: The crispy base that holds all the toffee goodness.
- Salted butter: Adds richness while balancing the sweetness with a subtle salty note.
- Light brown sugar: Creates the sweet, caramelized toffee flavor.
- Flaky sea salt (optional): Enhances the flavor and adds a little gourmet touch.
Optional Chocolate Coating
- Milk chocolate: Use high-quality chocolate for the best flavor.
- Additional flaky salt: Perfect for a finishing sprinkle to balance the sweetness of the chocolate.
Kitchen Tools Needed for 3-Ingredient Cornflake Brittle
- Large heatproof mixing bowl
- Medium saucepan
- Baking tray
- Parchment paper
- Spatula or wooden spoon
How to Make 3-Ingredient Cornflake Brittle
Making this Cornflake Brittle is easy and fun, with simple steps that guarantee delicious results.
1. Prepare Your Oven and Tray
Preheat your oven to 350°F. Grease a small baking tray and line it with parchment paper to prevent sticking.
2. Measure the Cornflakes
Place 3 cups of cornflakes into a large, heatproof bowl. Make sure the cups are level and not heaped. Set aside.
3. Make the Toffee Mixture
In a medium saucepan, combine the diced butter, brown sugar, and optional flaky sea salt. Cook over medium heat, stirring constantly, until the butter melts. Once melted, bring the mixture to a simmer and cook for 1-2 minutes on medium-low heat until the sugar dissolves and the mixture becomes glossy.
4. Coat the Cornflakes
Remove the saucepan from heat and immediately pour the hot toffee mixture over the cornflakes. Toss gently with a spatula or wooden spoon, ensuring all the cornflakes are evenly coated.
5. Bake the Brittle
Spread the coated cornflakes evenly onto the prepared baking tray in a layer about ½ inch thick. Bake on the middle rack of the oven for 10-15 minutes, or until the brittle turns a deep golden brown. Keep a close eye on it to avoid burning.
6. Cool and Break
Let the brittle cool completely on the tray before breaking it into pieces. Cooling allows the toffee to set, giving it that signature brittle crunch.
7. Add the Chocolate Coating (Optional)
Dip the broken brittle pieces into melted milk chocolate and place them on a lined baking tray. Sprinkle with additional flaky salt for a gourmet touch. Let the chocolate set in the fridge before serving.
How to Store Cornflake Brittle
Store your Cornflake Brittle in an airtight container in the refrigerator to keep it fresh and crunchy. It will last up to 2 weeks, though it’s so delicious it’s unlikely to stick around that long! If you’ve added a chocolate coating, stack the pieces with parchment paper in between to prevent sticking.
3-Ingredient Cornflake Brittle Variations
Take your 3-Ingredient Cornflake Brittle to the next level with these creative twists:
- Nutty Crunch: Add chopped almonds, pecans, or peanuts to the cornflakes before coating with the toffee mixture.
- Dark Chocolate Dip: Swap milk chocolate for dark chocolate for a more intense flavor.
- Spicy Kick: Add a pinch of cayenne pepper or cinnamon to the toffee mixture for a spicy-sweet combination.
- Tropical Flair: Sprinkle shredded coconut over the brittle before baking for a fun tropical twist.
- Cereal Swap: Try using Rice Krispies or Cheerios for a different texture and flavor profile.
What to Serve with 3-Ingredient Cornflake Brittle
This Cornflake Brittle pairs perfectly with a steaming cup of coffee or tea for a midday snack. If you’re feeling indulgent, serve it alongside a scoop of vanilla ice cream—the brittle’s crunch adds a delightful texture to the creamy dessert. For parties, package it in small bags or jars for an easy and thoughtful treat your guests can take home.
Top Tips for Perfect 3-Ingredient Cornflake Brittle
- Measure carefully: Level the cornflakes to ensure even coating.
- Keep stirring: Stir the toffee mixture constantly to prevent burning.
- Work quickly: Pour the toffee over the cornflakes immediately after removing from heat, as it sets quickly.
- Watch closely while baking: The brittle can go from golden to burnt in seconds, so keep an eye on it.
- Cool completely: Let the brittle cool entirely before breaking—it will shatter into beautiful, crisp pieces.
Helpful Notes
- For a gluten-free option, ensure your cornflakes are certified gluten-free.
- This recipe works well as a gift—just package in cellophane bags tied with a ribbon.
- If you don’t have flaky sea salt, regular table salt works fine, but use a little less.
Tips from Well-Known Chefs
- Ina Garten: Always use high-quality butter for the best toffee flavor—it makes all the difference.
- Martha Stewart: Line your baking tray with parchment paper to avoid sticking and for easy cleanup.
- Claire Saffitz: Chill the brittle for a few minutes before breaking to get clean, even pieces.
Frequently Asked Questions (FAQ)
Q: Can I make this ahead of time?
A: Yes! Cornflake brittle stores beautifully for up to 2 weeks in an airtight container.
Q: Do I need a candy thermometer?
A: Nope! This recipe keeps things simple—just cook the toffee mixture until glossy.
Q: Can I use unsalted butter?
A: Yes, but add a pinch of salt to the toffee mixture to balance the sweetness.
Q: Can I freeze the brittle?
A: It’s not recommended, as the texture may become less crunchy.
Q: What other cereals can I use?
A: Rice Krispies, Cheerios, or even Frosted Flakes can work as substitutes.
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Try this 3-Ingredient Cornflake Brittle today—it’s quick, easy, and utterly delicious!