Chewy Lemon Bars

1. Preheat oven to 180°C/350°F/Gas 4.
2. Line a swiss roll tin (28cm x 18cm/ 11″ x 7″ approx) with greaseproof paper.
3. Mix oats and sugar in a bowl. Add the melted butter or margarine and mix until all ingredients are moist. Transfer to prepared tin and spread out evenly, then press down well.
4. Bake in preheated oven for about 10 minutes. Meanwhile, put the egg whites into a clean dry bowl. Add a pinch of salt and stiffly beat.
5. Gently fold in remaining ingredients.
6. Pour filling over the partially baked base and bake for a further 20 minutes until set and golden brown.
7. Remove from oven and dust with icing sugar, then cut into bars.

Note

Like flapjacks, with a tangy lemon twist