Makes 16
Preparation time 20 minutes, plus cooling
Cooking time 17 minutes
150 g (5 oz) plain flour
100 g (3½ oz) chilled lightly salted butter, diced
50 g (2 oz) icing sugar, sifted
1 egg yolk
½ teaspoon vanilla extract
75 g (3 oz) plain dark or milk chocolate, chopped
8 tablespoons ready-made caramel sauce
Place 16 mini silicone muffin cases on a baking sheet.
Put the flour and butter in a food processor and blend until the mixture resembles fine breadcrumbs, then lightly blend in the sugar. Add the egg yolk and vanilla extract and blend to make a soft dough. Shape the dough into 16 small balls and press a piece into the centre of each case.
Bake in a preheated oven, 200°C (400°F), Gas Mark 6, for 12–15 minutes until just starting to colour around the edges. Leave in the cases for 10 minutes, then transfer to a wire rack to cool.
Melt the chocolate (see page 14). Spoon a little caramel sauce into the centre of each shortbread and spread the melted chocolate on top.
For almond & polenta shortbreads, put 75 g (3 oz) caster sugar, 75 g (3 oz) ground almonds and 75 g (3 oz) polenta in a bowl. Add 75 g (3 oz) softened unsalted butter and the finely grated rind of 1 lemon. Beat well until the ingredients have combined to form a thick paste. Pack spoonfuls of the mixture into the cases, filling them to the tops. Bake as above and serve dusted with icing sugar.