Mix butter and sugar in mixer till creamy

Add flour and mix with a spoon.

Add the egg yolk beaten with 2 tsp water

Mix all in mixer.  The dough should be soft enough to handle it, not dry (if dry add a little more water)

Take 1/5  of dough for the trellis decoration. Spread the rest onto a tart dish sprayed with cooking spray. Prick dough with a folk

Warm 3 tbs of apricot jam and spread on dough.

Roll the dough set aside for the trellis and cut in neat strips to make the trellis.

Brush trellis with 1 yellow egg mixed with one tsp of water.

Place in pre heated oven at 180°C (350°F) for ½ hour.

Cool and serve with whipped cream.