Spanish Tuna-Stuffed Piquillo Peppers (Pimientos del Piquillo Rellenos de Atún) Recipe

Name: Spanish Tuna-Stuffed Piquillo Peppers (Pimientos del Piquillo Rellenos de Atún) Recipe
Prep time: 15 min
Total time: 15 min
Yield: 6
Ingredients: 1 (250-gram, about 8.5 ounces) can oil-packed bonito tuna, such as Ortiz, drained; 1 recipe allioli (see note), divided; 1 small shallot, minced (about 2 tablespoons); 1 tablespoon fresh juice from 1 lemon; 1 tablespoon chopped brined capers; 3 tablespoons minced fresh flat-leaf parsley leaves, divided; 1/4 cup extra-virgin olive oil, plus more for serving; Kosher salt and freshly ground black pepper; 1 (12- to 14-ounce) jar piquillo peppers, drained, about 12 total (see note); 12 slices baguette, cut on a sharp bias and toasted; Coarse sea salt, for serving