These Caramel Cornflake Brownies are the best of both worlds: a rich, fudgy chocolate brownie base topped with a thick layer of crunchy caramel-coated cornflakes. You get deep cocoa flavor, gooey brownie centers, and a sweet, buttery caramel crunch on top.

Every bite has contrast—soft and dense underneath, crispy and crackly on top. They slice beautifully, look impressive on a tray, and feel like a cross between a brownie and a candy bar. Perfect for parties, bake sales, holidays, or whenever you want a show-stopping dessert with simple ingredients.

Why You’ll Love These Caramel Cornflake Brownies

  • Fudgy + crunchy texture – Dense brownie base with crispy caramel cornflake topping.
  • Big chocolate flavor – Rich cocoa and melted chocolate in the brownie layer.
  • Crowd-pleasing – Easy to slice into squares for sharing or gifting.
  • Make-ahead friendly – They set well and taste even better the next day.
  • Simple ingredients – Pantry staples, no mixer required.

Ingredients

For the Brownie Base

  • 170 g (3/4 cup) unsalted butter
  • 170 g (6 oz) dark or semi-sweet chocolate, chopped
  • 200 g (1 cup) granulated sugar
  • 100 g (1/2 cup) light brown sugar, packed
  • 3 large eggs, at room temperature
  • 2 tsp vanilla extract
  • 95 g (3/4 cup) all-purpose flour
  • 30 g (1/4 cup) unsweetened cocoa powder
  • 1/2 tsp fine salt

For the Caramel Cornflake Topping

  • 75 g (5 tbsp) unsalted butter
  • 150 g (3/4 cup) light brown sugar, packed
  • 60 ml (1/4 cup) honey or light corn syrup
  • 1/4 tsp fine salt
  • 60 ml (1/4 cup) heavy cream
  • 1 tsp vanilla extract
  • 90–120 g (about 4–5 cups) cornflakes

Optional Finishing

  • Flaky sea salt, for sprinkling
  • Extra chopped chocolate or mini chocolate chips to press on top (optional)

How to Make Caramel Cornflake Brownies

1) Prep the pan and oven

Preheat your oven to 175°C (350°F).

Line a 23×33 cm (9×13-inch) baking pan with parchment paper, leaving an overhang on the long sides to lift the brownies out later. Lightly grease the parchment.

Tip: The parchment sling makes it much easier to get clean cuts once everything is set.

2) Make the brownie base

In a heatproof bowl set over a pot of gently simmering water (or in short microwave bursts), melt the butter and chopped chocolate together, stirring until smooth.

Remove from heat and whisk in granulated sugar and brown sugar while the mixture is still warm. It will look thick and glossy.

Whisk in the eggs one at a time, then the vanilla, beating until the mixture looks shiny and slightly thickened.

In a separate bowl, whisk together flour, cocoa powder, and salt.

Fold the dry ingredients into the chocolate mixture just until no streaks of flour remain. Don’t overmix.

Pour the brownie batter into the prepared pan and smooth the top into an even layer.

3) Bake the brownies

Bake for 20–23 minutes, or until the edges are set and a toothpick inserted in the center comes out with a few moist crumbs (not wet batter).

Set the pan on a rack while you make the caramel cornflake topping. The brownies will go back into the oven briefly, so slightly underbaked is okay at this stage.

4) Make the caramel for the topping

In a medium saucepan, combine butter, brown sugar, honey or corn syrup, and salt.

Cook over medium heat, stirring gently, until the butter melts and the mixture starts to bubble.

Let it bubble for 2–3 minutes, stirring often, until slightly thickened and glossy.

Remove from heat and carefully stir in the heavy cream and vanilla (it may bubble up). Stir until smooth.

5) Coat the cornflakes

Place cornflakes in a large mixing bowl.

Pour the warm caramel over the cornflakes and gently fold with a spatula until all the flakes are evenly coated, trying not to crush them too much.

If the mixture seems too wet, add a small handful more cornflakes; if too dry, warm a tablespoon more honey or cream and drizzle over.

6) Top the brownies and finish baking

While the brownies are still warm (but not piping hot), gently spoon the caramel cornflake mixture over the brownie layer in the pan.

Use a spatula or lightly oiled hands to press the cornflakes into an even, compact layer so they stick well to the brownie base.

Return the pan to the oven and bake for another 5–7 minutes to help the topping set and fuse to the brownies.

Remove from the oven and, if desired, sprinkle lightly with flaky sea salt. Let cool completely in the pan.

Tip: For the neatest slices, chill the brownies for at least 1–2 hours once they’re at room temperature.

7) Slice and serve

Once fully cool and set, use the parchment overhang to lift the whole slab out of the pan.

Use a sharp knife to cut into squares or bars, wiping the blade between cuts for clean edges.

Serve at room temperature or slightly chilled.

Serving Suggestions

  • Serve squares with a glass of milk, coffee, or hot chocolate.
  • Add a small scoop of vanilla or caramel ice cream on top for an extra-indulgent dessert.
  • Cut into small bites for party trays, bake sales, or dessert buffets.
  • Wrap individual squares in parchment and tie with string for sweet homemade gifts.

Cook’s Tips

  • Don’t overbake the brownies: Slightly fudgy in the center is ideal; they’ll firm up as they cool.
  • Press the topping firmly: Compacting the cornflake layer helps it adhere and makes slicing easier.
  • Use a large bowl for cornflakes: You want room to coat without crushing them into crumbs.
  • Chill to set: Cooling completely (and then chilling) helps the caramel cornflake layer slice cleanly.
  • Sharp knife, clean cuts: Use a large sharp knife and wipe between cuts to avoid dragging caramel and crumbs.

Variations & Add-Ins

  • Nutty version: Add 1/2 cup chopped toasted hazelnuts or pecans to the cornflake mixture or brownie batter.
  • Extra chocolate: Stir mini chocolate chips into the cornflake topping after it cools slightly so they don’t fully melt.
  • Salted caramel twist: Increase the salt in the caramel slightly and finish generously with flaky sea salt.
  • Thicker brownies: Bake in a slightly smaller pan (e.g., 8×12-inch) and adjust bake time, checking for doneness.
  • Gluten-free: Use a gluten-free flour blend for the brownies and be sure your cornflakes are certified gluten-free.

Storage & FAQ

  • Storage: Store brownies in an airtight container at room temperature for 2–3 days or in the fridge for up to 5 days.
  • Refrigeration: Chilling helps the caramel cornflake layer stay crisp; let sit a few minutes at room temp before serving if you prefer softer brownies.
  • Freezing: Freeze cut brownies in a single layer, then transfer to a freezer bag for up to 2 months. Thaw in the fridge or at room temperature.
  • Topping too sticky? Chill longer; if your kitchen is warm, keep them refrigerated and serve slightly chilled.
  • Can I use a boxed brownie mix? Yes—bake a 9×13 pan of brownies according to package directions and add the caramel cornflake topping as described.

Caramel Cornflake Brownies give you rich, fudgy chocolate squares topped with a crunchy, buttery caramel cornflake layer—a fun, bakery-worthy twist on classic brownies that slice clean, travel well, and disappear fast wherever you take them.

Caramel Cornflake Brownies – Fudgy, Crunchy & Caramel-Loaded

Caramel Cornflake Brownies – Fudgy, Crunchy & Caramel-Loaded
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Servings: 16
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Ultra-fudgy brownies topped with a thick layer of crunchy caramel-coated cornflakes. These Caramel Cornflake Brownies are rich, gooey, and crisp on top—perfect for parties, bake sales, or an indulgent chocolate-caramel treat.

Caramel Cornflake Brownies – Fudgy, Crunchy & Caramel-Loaded
🖨 Print Recipe📌 Pin it

Ingredients

  • For the Brownie Base:
  • 170 g (3/4 cup) unsalted butter
  • 170 g (6 oz) dark or semi-sweet chocolate, chopped
  • 200 g (1 cup) granulated sugar
  • 100 g (1/2 cup) light brown sugar, packed
  • 3 large eggs, at room temperature
  • 2 tsp vanilla extract
  • 95 g (3/4 cup) all-purpose flour
  • 30 g (1/4 cup) unsweetened cocoa powder
  • 1/2 tsp fine salt
  • For the Caramel Cornflake Topping:
  • 75 g (5 tbsp) unsalted butter
  • 150 g (3/4 cup) light brown sugar, packed
  • 60 ml (1/4 cup) honey or light corn syrup
  • 1/4 tsp fine salt
  • 60 ml (1/4 cup) heavy cream
  • 1 tsp vanilla extract
  • 90–120 g (about 4–5 cups) cornflakes
  • Optional Finishing:
  • Flaky sea salt
  • Extra mini chocolate chips or chopped chocolate

Instructions

  1. 1. Prep pan and oven
  2. 2. Preheat oven to 175°C (350°F).
  3. 3. Line a 9×13-inch (23×33 cm) baking pan with parchment, leaving an overhang, and lightly grease.
  4. 4. Make the brownie batter
  5. 5. Melt butter and chopped chocolate together in a heatproof bowl over simmering water or in short microwave bursts, stirring until smooth.
  6. 6. Whisk in granulated and brown sugar.
  7. 7. Add eggs and vanilla; whisk until glossy and well combined.
  8. 8. In a separate bowl, whisk flour, cocoa powder, and salt.
  9. 9. Fold dry ingredients into the chocolate mixture just until combined.
  10. 10. Bake the brownie base
  11. 11. Pour batter into prepared pan and smooth the top.
  12. 12. Bake for 20–23 minutes, until edges are set and a toothpick in the center comes out with moist crumbs.
  13. 13. Make the caramel topping
  14. 14. In a medium saucepan, combine butter, brown sugar, honey or corn syrup, and salt.
  15. 15. Cook over medium heat, stirring, until melted and bubbling.
  16. 16. Let bubble for 2–3 minutes, then remove from heat and stir in heavy cream and vanilla until smooth.
  17. 17. Coat the cornflakes
  18. 18. Place cornflakes in a large bowl.
  19. 19. Pour warm caramel over the flakes and gently fold until evenly coated.
  20. 20. Top the brownies and finish baking
  21. 21. Spoon the caramel cornflake mixture over the warm brownie layer.
  22. 22. Press gently into an even, compact layer.
  23. 23. Return pan to the oven and bake for 5–7 minutes more.
  24. 24. Remove and, if desired, sprinkle with flaky sea salt.
  25. 25. Cool completely in the pan, then chill for at least 1–2 hours for easiest slicing.
  26. 26. Slice and serve
  27. 27. Use the parchment overhang to lift the slab out of the pan.
  28. 28. Cut into squares with a sharp knife, wiping between cuts. Serve at room temp or slightly chilled.

Notes

For extra crunch, use the higher amount of cornflakes; for a slightly chewier topping, use the lower end.
Chilling helps the caramel layer firm up and the bars slice cleanly.
If some caramel runs to the sides, you can gently press it back toward the brownies while still warm.
Swap honey for corn syrup depending on the flavor you prefer (honey gives a more floral note).

Nutrition

Calories: ~320–360
Protein: ~4–5 g
Total Fat: ~18–20 g
Carbohydrates: ~40–45 g
Fiber: ~2 g