Preheat the oven to 350°F.

1. Pour the egg whites and sugar into a bowl and mix well to incorporate.

2. In a bain-marie, heat this mixture while stirring constantly to melt the sugar grains. But above all, do not cook the egg whites!

3. As soon as the sugar has disappeared from the egg whites, pour everything into the robot bowl.

4. Beat the meringue with a whisk at maximum speed, until firm peaks are obtained.

5. Fill a piping bag with a single meringue tip.

6. Arrange the 1/2 melons flesh side up and sprinkle with sugar on the surface of the flesh.

7. Bake for 15 minutes.

8. Dress the meringue in the center of the 1/2 melons and place under the grill for a few minutes to color the meringue. Serve warm!