- 3/4 cup coarsely chopped fresh flat-leaf parsley
- 2 tablespoons unsalted butter, softened
- 1/2 teaspoon salt
- 1 large sweet onion such as Vidalia or Walla Walla
- 4 slices good-quality whole-wheat sandwich bread
- 1/4 lb thinly sliced cooked ham (preferably Black Forest)
- Finely chop parsley in a food processor, then add butter and salt and blend to a paste.
- Cut 4 (1/8-inch-thick) slices crosswise from center of onion, reserving remainder for another use.
- Spread 1 1/2 teaspoons parsley butter on 1 side of each slice of bread. Arrange 1 onion slice on each of 2 bread slices and spread each with 1 1/2 teaspoons parsley butter, then top each with one fourth of ham. Repeat layering with remaining onion, parsley butter, and ham, then cover with remaining bread slices, buttered sides down.