Steps
1. Preheat a skillet over medium heat.
2. Spread butter on one side of the bread slice. Place the bread butter side down onto the skillet.
3. Place a slice of cheese onto the bread. Place the second slice of bread on top.
4. Cook until the bread is golden brown and the cheese is melted, about 3 minutes each side.
5. Heat the canned tomato soup in a pan until steaming hot.
6. Serve the soup with the grilled cheese sandwich.