Chocolate, walnut, & hazelnut macaroons

I'm on a mission. That mission is to find the best biscuit made with egg whites and no yolks. The problem is, I don't even know where to start. Sure, I can make macarons, macaroons, or tuiles but I'm after something more homely. Something more biscuit-y; something squishy and awesome.

There biscuits aren't quite there but they're pretty good. I mean, with chocolate, almonds, and hazelnuts you can't exactly go wrong. They're somewhat squishy but not biscuit-y enough for me. But that's okay because my hunt has only just started, and it wouldn't be much fun if my quest was over after the first attempt, would it?

So if any of you lovely people out there have recipes for biscuits that use egg whites but no egg yolks send them my way! I'm super keen to give whatever wonderful recipes you have a shot.

Chocolate, walnut, & hazelnut macaroons

(adapted from Biscuits and Macaroons by the Australian Women's Weekly)
makes about 20 biscuits

100g almond meal
100g hazelnut meal
2 egg whites
110g (1/2 cup) caster sugar
1 teaspoon vanilla
1 tablespoon gluten free flour
4 teaspoons cocoa powder
90g (3 oz) dark chocolate, finely chopped
60g (2 oz) white chocolate

Preheat the oven to 150°C (300°F). Grease two oven trays and line them with baking paper.

Beat the egg whites until soft peaks form, gradually add the sugar, beating until dissolved after each addition. Stir in the vanilla extract, sifted flour, ground almonds & hazelnuts, and chopped chocolate in two batches.

Transfer the resulting batter into a piping bag and pipe evenly sized rounds about2.5cm (1 inch) in diameter on to the prepared trays. Bake for about 25 minutes, then cool on trays.

Once cool, melt the white chocolate, and spread over the bases of the macaroons. Place chocolate side down, on a tray lined with a fresh piece of baking paper and stand at room temperature to set. Once set, peel from the baking paper and store in an air tight container for up to a week.