I have become rather enamoured with a book called Slice & Bake Cookies by Elinor Klivans (Chronicle Books, 2013) who I discovered is a 76-year-old legend in baking and dessert making. Her signature technique is to freeze the cookie dough before baking, and you can store dough in the freezer to whip out and bake whenever you fancy. Having both hazelnuts and blue cheese on hand, I made a savoury version first.

Makes 28
1 c flour (I used wholemeal and white spelt)
1/2 tsp salt
1/4 tsp baking powder
115g butter at room temperature
1 tsp sugar (she used more, I thought it was too sweet)
1 egg, separated
6 tbsp/40g hazelnuts, toasted, skinned and finely chopped
30g blue cheese
30g cream cheese

In a bowl cream the butter and sugar until smooth, about 30 seconds using an electric mixer. Mix in egg yolk. Sift in flour, salt and baking powder and mix to form a dough. You can do this with a mixer but I prefer with a spoon then my hand so the dough does not clump inside the whisk blades.
Divide the dough into 2 equal parts. Roll each one on an unfloured surface to form a log 17cm long by 2.5cm in diameter. Roll to form a smooth cylinder.
Use a fork to beat the egg white until foamy. Use a pastry brush to coat eat roll with the egg white. Sprinkle half the hazelnuts over each log and roll back and forth to coat the log. Wrap each log in cling film and refrigerate for at least 3 hours or overnight, until firm. Or wrap in foil and freeze for up to 2 months.
When ready to bake preheat oven to 165C. Line 2 baking trays with baking paper.
In a small bowl mix the blue cheese and cream cheese until smooth.
Using a sharp knife but each log into 14 slices about 12mm thick. Please them 2.5cm apart on the baking trays. These cookies don't spread much. Use your thumb or small spoon to make an indentation in each cookie about 6mm deep. Put a little bit of cheese filling in each one.
Bake for about 20-22 minutes until the edges and bottoms are browned and the cheese is melted.
Let cool on the trays for a few minutes before transfering to a wire rack to cool completely.