Step: 1/7

Preheat the oven to 220°C (200°C fan, gas 7). Unroll the puff pastry and place on a baking tray lined with baking paper. Score a 3cm wide border around the edge with a knife.

Step: 2/7

Mix the yogurt with sour cream, lemon juice, salt and pepper. Spread over the centre of the pastry, leaving the border clear.

Step: 3/7

Mix the egg yolk with 1 tbsp water and brush over the edge of the pastry.

Step: 4/7

Sprinkle with dukkah spice.

Step: 5/7

Wash and diagonally slice the courgettes. Arrange on the tart.

Step: 6/7

Sprinkle with the cheese.

Step: 7/7

Bake for 20 minutes until golden brown. Sprinkle with sesame seeds. Serve warm.