Remove the pastry from the refrigerator about 15 minutes before you want to use it.
Set the oven to 200C or 180C Fan oven or Gas Mark 6.
Line a baking sheet with parchment baking paper.
Unroll the pastry and cut into approximately 4cm x 4cm squares. You will get about 6 from the width of the pastry. The leftover pastry can be frozen for another occasion.
Put the pastry squares on the baking sheet and prick each one well with a fork – particularly in the centre.
Put the tapenade, cheese and lemon zest in a bowl and mix well.
Divide the tapenade between the squares by putting a small amount in the centre and spreading flat.
Leave a border of pastry clear on the squares.
Cut the tomatoes in half and place one half on top of each square pressing down lightly.
Drizzle over a little olive oil and season with salt and pepper.
Take care with the salt as the tapenade is salty.
Bake in the preheated oven for about 12 – 15 minutes or until the pastry has risen and is cooked and the tomato has softened a little.
Put on a plate to serve and sprinkle over the chopped chives.
Serve warm or cold.