Preheat the oven to 200C/400F/Gas 6.
Line a baking sheet with greasproof paper.
Place all the ingredients into a bowl and mix together.
Spoon the flapjack mixture onto the greaseproofed baking sheet, and place into the oven to cook for 10 minutes.
Remove the flapjacks and transfer into the freezer for five minutes to set and firm.
Once the flapjacks are set, remove from the freezer and cut into chunks.
To serve, place onto a serving plate and dust with icing sugar and drizzle over with honey.