Root Vegetable Cobbler with Chive Biscuits

Filling:
3 tablespoons butter
1 large onion, chopped
1 1/2 pounds white-skinned potatoes, peeled, cut into 1/2-inch pieces (about 3 2/3 cups)
1 8- to 9-ounce turnip, peeled, cut into 1/2-inch pieces, or substitute parsnip
1 large carrot, peeled, cut into 1/2-inch pieces
1 1/2 teaspoons dried thyme
3/4 teaspoon ground cumin
1/2 teaspoon ground black pepper
1 14 1/2-ounce can vegetable broth
1 cup water
1 cup whipping cream
8 ounces fresh shiitake or cremini mushrooms, stemmed, caps diced
1 cup frozen peas
1/4 cup chopped fresh chives
1 tablespoon all-purpose flour

Biscuit topping:
2 cups all-purpose flour
1 tablespoon baking powder
1 teaspoon salt
1/4 cup chopped fresh chives
6 tablespoons chilled unsalted butter, cut into 1/2-inch pieces
2 large eggs
1/2 cup whole milk

For 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 6 ingredients 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, 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 baking dishes or one medium-sized baking dish; set aside. (Can be prepared 1 1/2 hours ahead. Let stand at room temperature.)

For biscuit topping:

Heat oven to 425°F. Sift flour, baking powder and salt into bowl. Stir in chives. Add butter; rub in with fingertips until mixture resembles 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 a 3 1/2-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.

Serves 6.

From Epicurious/ Bon Appetit, with very minor changes