1. Place the ground beef into a bowl, and then add the scallions, seasonings, and sage. Mix well together.
2. Divide into 4 equal portions and then divide each portion into two, giving 8 portions of meat. Flatten each out into a flat burger shape.
3. Place a slice of cheese on top of 4 of the burgers and top with the remaining 4, sealing with a little water.Heat the oil in a large skillet and cook over a moderate heat for approx. 3-4 minutes per side.
4. Serve with a little salad in a toasted bun topped with another half slice of cheese. This recipe is a picnic pleaser!