准备

• Position racks in the upper and lower thirds of the oven and heat the oven to 375°F. Meanwhile, prepare foil packets. Start with four 12×20-inch pieces of regular or heavy-duty foil. Fold them in half to make 12×10-inch rectangles.
• Thoroughly pat the chicken breasts dry and season with salt and pepper. Heat 1 Tbs. of the olive oil and 1 Tbs. of the butter in a 12-inch skillet over medium-high heat. When the butter stops foaming, add the chicken and cook until browned on both sides, 3 to 4 minutes per side. Transfer to a plate. Return the pan to the heat, add the vermouth, scrape up any brown bits from the bottom of the pan with a wooden spoon, and cook until reduced to about 2 Tbs. Immediately remove from the heat and set aside.
• 将箔纸放在工作表面上。涂上剩余的1-1/2 TB的每个内部。黄油，留下3英寸的边框。在一个中等大小的碗中，用1茶匙将芹菜和熏火腿扔。橄榄油，1/2茶匙。盐和1/4茶匙。胡椒粉，用手指分解任何prosciutto。将芹菜混合物分配在薄片之间，将其排列在一层大约与鸡胸肉大小的一侧。将刺山柑撒在芹菜上。将鸡胸肉放在上面，每人都淋上了苦风雨。 Scatter the tomatoes over the chicken. Top each with a bay leaf and drizzle with the remaining 2 tsp. olive oil. Fold the other of the foil over the ingredients, then tightly fold or crimp the edges to seal.
• Transfer the packets to two large, rimmed baking sheets and bake until the packets are puffed and fragrant, 19 minutes. Serve immediately.

Creamy polenta or mashed potatoes would be a perfect accompaniment.