Cut the galletti down the backbone and open out to flatten. Rinse and pat dry with paper towels. Salt and pepper both sides, then lay them in an oven dish large enough to take them side by side.
Mix the lemon juice, olive oil, chilli, Tabasco sauce and rosemary together in a bowl and pour over the galletti. Tuck the bay leaf and garlic in between. Massage the flavourings into the gallet