Preparation Mix unsalted butter, sun-dried tomatoes, Kalamata olives, anchovy fillets, and capers in small bowl. Season to taste with salt and pepper. Transfer tapenade butter to sheet of plastic wrap. Using plastic wrap as aid, form tapenade butter into 1-inch-diameter log, wrapping plastic tightly around log. Chill tapenade butter until cold. (Can be prepared 2 days ahead. Keep refrigerated.) Cut log crosswise into 1/4- to 1/3-inch-thick slices.