Root Vegetable Cobbler with Chive Biscuit Topping

PreparationFor filling: Melt 2 tablespoons butter in heavy large pot over medium-high heat. Add onion and sauté until deep golden, about 7 minutes. Add next 7 in-gredients and stir 1 minute. Add broth and 1 cup water; bring to boil. Reduce heat, cover and simmer until vegetables are almost tender, about 10 minutes. Stir in cream, shiitake mushrooms, peas and chives. Season to taste with salt. Bring mixture to simmer. Mix remaining 1 tablespoon butter and flour in small bowl to blend. Stir into vegetable mixture; simmer until mixture thickens slightly, about 5 minutes. Divide vegetable mixture among six 2-cup soufflé or baking dishes; set aside. (Can be prepared 1 1/2 hours ahead. Let stand at room temperature.) For biscuit topping: Preheat oven to 425°F. Sift flour, baking powder and salt into bowl. Stir in chives. Add butter; rub in with fingertips until mixture re-sembles coarse meal. Add eggs and milk and stir until soft moist dough forms. Turn dough out onto generously floured surface. Knead gently just to combine. Divide dough into 6 equal pieces; pat out each piece to 31/2-inch round. Place 1 dough round atop vegetable filling in each dish (some filling will show around edges). Place dishes on large baking sheet. Bake until topping is golden and vegetable mixture is heated through, about 18 minutes. Let stand 5 minutes. Serve hot.