Preheat your grill to 400°F
Gently, with a sharp knife, score the skin of the duck in a diamond pattern, cutting through the skin and fat layer, but leaving the meat intact. Season to taste with salt and pepper.
Combine the butter, maple syrup and brown sugar in a small bowl.
On your side burner, or on the stove, set a pot with half a cup of water to simmer. Add the green beans and cook for 4 minutes.
Place the duck breasts on the grill over direct heat, skin side down, and grill for 7 minutes.
Drain the green beans and bring them to the grill. Set the Cast Iron Skillet or one of the Griddles on the grill and add the green beans.
Flip the duck over and brush the skin side with the maple-butter mixture, brush the beans as well. Cook the duck breasts for another 3 to 5 minutes or until an instant read thermometer reads 165°F. Brush the breasts and beans generously with the maple-butter mixture several times before they’re done cooking.
Serve with potatoes and watch it disappear.