Poulet Vallée d'Auge

Heat 2 tablespoons butter in a large heavy pot over medium heat. Add apples and cook, turning occasionally, until golden in spots, 10–12 minutes. Transfer apples to a plate and set aside.

Increase heat to medium-high and add oil and 1 tablespoon butter to pot. Season chicken with salt and pepper and, working in batches, cook until browned, about 5 minutes per side. Transfer chicken to another plate; set aside.

Add leek and shallots to pot; cook, stirring often, until softened, about 4 minutes. Remove pot from heat, add Calvados, and ignite with a long match or lighter. After flames die down, return pot to heat and add cider. Bring to a boil, reduce heat, and simmer until slightly reduced, about 3 minutes.