Penne with broccoli, raisins and nuts * 1/4 cup olive oil * 1 large (10 ounces) sweet onion, quartered, thinly sliced * 1 cup raisins * 1/2 cup nuts, such as slivered almonds, pecans or cashews * 3 large cloves garlic, finely chopped * 1/2 teaspoon salt * 1/4 teaspoon crushed red pepper flakes * 2 broccoli crowns, about 13 ounces total, ends trimmed, stalks peeled * 1/2 pound whole-wheat penne pasta Heat olive oil in a large skillet over medium heat. Add onion; cook, stirring often, until richly golden and tender, 6-8 minutes. Stir in raisins, nuts, garlic, salt and pepper flakes.