Baked Leek and Sweet Potato Gratin
1. Preheat oven to 450°F. Coat 10-inch round pan with cooking spray.
2. Heat 1 Tbs. oil in nonstick skillet over medium-high heat. Add leeks, garlic, and 1 1/2 Tbs. rosemary; sauté 8 minutes, or until softened. Season with salt and pepper, if desired.
3. Arrange one-third sweet potato slices over bottom of prepared pan, overlapping slightly. Spread half of leek mixture on top. Arrange another one-third sweet potato slices over leeks; top with remaining leeks, followed by remaining sweet potatoes. Drizzle broth over dish. Cover pan with foil, and bake 35 minutes.
4. Stir together breadcrumbs, remaining 1 1/2 tsp. oil, and remaining 1 1/2 Tbs. rosemary, in small bowl. Remove foil from gratin, and sprinkle with breadcrumb mixture. Bake, uncovered, 15 minutes, or until breadcrumbs are browned and crisp. Let gratin cool slightly before cutting into 8 wedges and serving.