Melt butter and brown sugar in a saucepan over medium heat until combined. Let it boil for 1 minute.
Stir through the cornflakes until they’re well coated in that buttery caramel.
Pour the mixture onto a lined baking tray and flatten it out evenly.
Bake at 200°C for 5 minutes, then let it cool for 10 minutes.
While it cools, melt the chocolate in the microwave for 1.5 to 2 minutes, stirring every 30 seconds until smooth.
Pour the melted chocolate over the cornflake base, spreading it evenly.
Sprinkle with a pinch of salt and slivered almonds for that extra crunch.
Pop it in the fridge until the chocolate sets completely.
Cut into squares or shards and dig in!