In a 3-quart saucepan over medium heat, combine the chicken broth, 2 tablespoons of the butter, and 2 teaspoons of the dill. Once the liquid gets hot, add the pearl onions and peas. Cook and stir for 5 minutes until well coated and thickened slightly. Add the watercress, remaining butter, and dill; season with salt and pepper.
Recipe courtesy of Tyler Florence