Preheat your oven to 180°C (350°F) and line a baking tray with parchment paper
Roll out the puff pastry sheet on a lightly floured surface to a thickness of about 3mm
1 sheet Ready-rolled all butter puff pastry
Using a round cutter, cut circles from the pastry that are slightly larger than the size of your tart tin
Gently press each pastry circle into the tart tin, making sure it fully lines the base and sides
Prick the bottom of the pastry with a fork to prevent it from puffing up during baking
Fill each pastry case with a spoonful of strawberry jam, spreading it evenly
4 tablespoons Good quality strawberry jam
Place an apricot half on top of each jam-filled case, pressing it down slightly
6-8 pieces Apricot halves
In a small bowl, whisk the egg and brush a little over the exposed pastry edges
1 Medium free-range egg
Sprinkle demerara sugar over the top of each tart for a sweet, crunchy finish
1 tablespoon Demerara sugar
Place the baking tray with the assembled jam tarts in the preheated oven
Bake for approximately 20 minutes or until the pastry turns golden brown and crisp
Once baked, remove the tarts from the oven and cool them on a wire rack
Serve your delicious homemade jam tarts warm or at room temperature