Step 1

Put the butter and sugar in a large mixing bowl. Beat until light and fluffy.

Step 2

Add the egg and beat again.

Step 3

Add the flour, baking powder, salt and bicarbonate of soda and mix using a fork or electric whisk.

Step 4

Add the strawberry pieces and mix briefly until evenly distributed.

Step 5

Gather into a ball, then turn out onto a floured surface and form into an oblong about 2 cm (3/4 inch) tall and 5cm (2 inches) wide and as long as the dough allows (probably about 30cm / 12 inches). Wrap and chill in the refrigerator for 15 minutes or until firm.

Step 6

Preheat the oven to 200C (180C fan-assisted, 400F).

Step 7

Using a sharp knife, cut the dough into slices 1/2cm (1/4 inch) thick.

Step 8

Place the cookies on a lined baking sheet. They don’t spread very much, so can be placed quite close together.

Step 9

Bake for 5 minutes, until only just beginning to colour.

Step 10

Allow to firm on the tray for a few minutes, then transfer to a wire rack to cool completely.