Ingredients

1/2 cup red or white pearl onions, blanched and peeled 

1 tablespoon unsalted butter 

1 jarred roasted red pepper, finely chopped 

1/2 cup pitted Kalamata olives, thinly sliced 

1/2 cup pitted green Cerignola olives, thinly sliced lengthwise (see the Guide) 

1 garlic clove, minced 

2 tablespoons finely chopped fresh flat-leaf parsley 

3 dried red chiles, crumbled 

1/4 cup extra-virgin olive oil 

1/4 cup sherry vinegar 

1/2 teaspoon coarse salt 

1/4 teaspoon freshly ground pepper 

Preparation

Put onions, butter, and 2 tablespoons water in a saucepan over medium-low heat. Cover; cook until onions cook through, about 6 minutes. Cool. Quarter onions. Combine with remaining ingredients in a bowl. Serve cold or at room temperature.