Grilled Spring Onions with Romesco Sauce

Name: Grilled Spring Onions with Romesco Sauce
Ingredients: ¼ cup toasted slivered almonds; 2 large jarred roasted red peppers, rinsed and chopped; 1 slice whole-grain country bread (1 inch thick), toasted; 2 cloves garlic, minced; 1 tablespoon chopped fresh parsley; ½ teaspoon crushed red pepper; ¼ cup red-wine vinegar; 1 tablespoon honey; ⅓ cup extra-virgin olive oil plus 1 tablespoon, divided; 16 torpedo or spring onions (about 1 pound); ¼ teaspoon kosher salt; ¼ teaspoon ground pepper