Remove and discard ribs from Swiss chard. Rinse chard with cold water; drain and coarsely chop.
Melt butter in a sauté pan or Dutch oven over medium heat; cook 2 minutes or until butter begins to brown. Add raisins and pine nuts; sauté 2 to 3 minutes or until pine nuts are golden. Gradually add chard. Sauté 3 minutes or until greens are wilted. Add salt and pepper; toss well. Transfer to a serving bowl.