Preheat oven (electric cooker: 200 °C/circulating air: 180 °C/gas: see manufacturer). Remove dough from the refrigerator. Coat the twelve hollows of a muffin tray with oil. Dice tomatoes very finely. Grate cheese coarsely. Mix both with red pesto. Chop olives coarsely and mix with green pesto.
Roll out the dough, cut in half crosswise. Spread one half with red pesto, the other half with green pesto, leaving a small edge. Roll up from the longer side in each case. Cut into 6 snails and place in the muffin troughs. Bake in a hot oven for about 12 minutes.