Preheat oven to 180°C fan / gas mark 6. Line a baking tray with baking parchment and set aside.

Beat the Splenda Granulated, 3 eggs, and milk at medium speed of an electric mixer for 3 minutes or until mixture is smooth, fluffy and pale yellow in colour. Then beat in the vanilla extract.

In another bowl, add the flour, baking powder and salt and stir until well combined. Carefully add the flour mixture to the egg mixture and fold together until well blended. Stir in the chocolate chips. The dough should be slightly sticky.

Divide dough in half and shape each portion into a 20 cm log. Place the logs on the prepared baking tray cookie sheet and flatten to 2 cm thickness. If you find the dough sticks to your hands, sprinkle a little extra flour over the dough and then flatten with your hands.

Bake for 20 minutes until puffed and golden brown; remove from oven and reduce oven temperature to 165°C fan / gas mark 4.

Leave the biscuits to cool on the baking tray for 10 minutes. Gently remove the baking parchment and cut each log diagonally into 2 cm thick slices with a serrated knife. Place slices on a baking tray with the cut sides facing upwards. Bake for 6 minutes, turn slices over and bake 6 additional minutes. Remove to wire racks to cool.