Preheat the oven to 160 °C. Spread the pine nuts on a baking sheet and bake in the oven for 10 minutes. Then transfer them to a bowl and let them cool.

Cut the deseeded melons into 2 cm cubes. Halve the onion lengthwise and slice it very thinly. Cut the olives in half.

In a bowl, combine the melons, pine nuts, olives, and onion, add salt, pepper, and olive oil, and mix.