Halve the rondinis, scoop out with a spoon. Lightly season the hollowed out vegetables. Chop the hollowed out and place in a bowl. Peel and squeeze the garlic. Finely chop the basil, dice the feta, add both to the filling and season everything. Put the filling in the vegetables and wrap them in aluminum foil (should still be a bit open at the top). Cook in the oven at around 175 ° C for about 45-60 minutes.