CHICKEN AND VEGETABLE COBBLER

Steps:

• Heat oven to 400 degrees. Put oil in a large skillet over medium heat. When oil is hot, add the leek, sprinkle with salt and pepper, and cook, stirring occasionally, until softened, about 5 minutes. Add mushrooms and cook until liquid has released and evaporated, about 8 to 10 minutes.
• Add stock and rosemary; bring to a boil, and let bubble for a minute or two, then add carrots and chicken and reduce heat so the liquid simmers. Cook until carrots are almost tender and chicken is cooked through, 8 to 10 minutes. Add peas and cook, stirring occasionally, until vegetables are brightly colored and just tender, another minute or so; fish out rosemary stem and discard.
• Whisk cornstarch with a few tablespoons of broth to make a slurry. Add slurry to pot and stir until liquid thickens slightly. Transfer everything to an ovenproof dish and set aside.
• Put flour in a food processor with baking powder, soda and salt. Add butter and process until mixture resembles small peas, no more than 30 seconds. (You can also do this by hand, using two knives, a fork, your fingers, or a pastry cutter). Transfer mixture to a bowl and mix in buttermilk and egg until it just comes together; it should be sticky.
• Drop spoonfuls of batter on top of vegetables and chicken and smooth with a knife, covering as much surface area as possible but leaving a few gaps for steam to escape. Bake for 35 to 45 minutes until golden on top and bubbly underneath. Scoop into bowls and serve immediately.