Clean the trout thoroughly, removing the innards and rinsing them under running water.
Finely chop the parsley and rosemary.
In a bowl, mix chopped parsley and rosemary with a pinch of salt and pepper, adding a tablespoon of olive oil.
Evenly distribute the flavored mixture inside each trout.
Grease the trout with the remaining olive oil.
Preheat the grill to medium-high temperature.
Place the trout on the hot grill, salt and pepper them lightly.
Cook the trout for about 10 minutes, turning them gently halfway through cooking, until they are nicely browned on both sides.
Notes
For an extra touch of flavor, you can add a pinch of dried herbs, such as thyme or marjoram, to the parsley and rosemary mixture. This variation will further enrich the flavor of your rosemary trotters.