Prepare the shortcrust pastry:Mix 200 g plain flour and 50 g sugar in a bowl. Add 100 g butter and rub it into the flour mixture until you have a crumbly texture.Add 1 pcs egg yolk and 1 tbsp water, and quickly bring the dough together. Shape the dough into a flat rectangle and let it rest in the fridge for 30 minutes.
Make the tosca topping:Melt 100 g butter, 100 g sugar and 2 tbsp milk in a saucepan over medium heat.Add 100 g flaked almonds once the sugar has dissolved.Let the mixture simmer, stirring, for a couple of minutes until it turns golden and thick.
Prepare the air fryer:Preheat your air fryer to 180°C.(Pre-program it, or let it run for a couple of minutes before cooking)
Roll out the dough: Roll out the shortcrust pastry into a rectangle about 0.5 cm thick and cut it into 12 bars. Place them slightly apart on a piece of baking paper that fits the basket (bake in 2 batches if there isn't room), lift them on the paper into the hot basket and pre-bake at 180 °C for about 8 minutes, until the edges are pale golden.
Assemble the bars: Spread the tosca topping evenly over the 12 pre-baked bars.
Baking: Bake the tosca bars in the air fryer at 180 °C for a further 5-7 minutes (in 2 batches if needed), until the topping is bubbling and golden brown. Keep an eye on them to avoid burning.Start the online kitchen timer here
Cool: Let the tosca bars cool on a wire rack.
Melt the chocolate:Melt 200 g dark chocolate over a water bath and brush the edges/sides of the bars with a thick layer of chocolate.Place them in the fridge for about 30 minutes, until the chocolate has set.
Now the tosca bars are ready to serve!
Notes
- Air fryers can vary in efficiency, so adjust the baking time to suit your model if needed.- The topping may bubble up during baking but will set as it cools.