1 1/2 tablespoons unsalted butter
1/2 pound turnips, trimmed, peeled, halved, cut into 1/4-inch wedges
2 cloves garlic, minced
1 cup vegetable stock
1 bunch kale, stems and ribs discarded, leaves torn into large pieces
1 teaspoon fresh thyme leaves
1/4 cup golden raisins
Salt and pepper