Method

1. Preheat your oven to 180°C (160°C fan forced) and prepare two large baking trays with non-stick parchment.
2. Beat together the softened butter, sugar, and vanilla until the mixture is light and fluffy.
3. Gradually mix in the beaten egg, followed by the flour, baking powder, and salt until you have a soft dough.
4. Shape the dough into small balls (around 3cm in diameter) and space them out on the trays. Press your thumb gently into each ball to create a hollow in the centre.
5. Add approximately ½ tsp of jam to the centre of each biscuit or until the hollow is filled.
6. Bake for 12-15 minutes until lightly golden. Leave to cool before moving to a wire rack.