Preheat oven (electric cooker: 200 °C/circulating air: 175 °C/gas: see manufacturer). Line a tray with baking paper.
1 large zucchini clean, wash and cut into approx. 1⁄2 cm thick slices. Distribute on the tray. Season with salt and pepper, drizzle with 2 tablespoons of olive oil. Bake in a hot oven for about 10 minutes. Boil 1 egg hard for 10 minutes. Wash 5 stalks of basil, shake dry, pluck off leaves.
Finely chop 2 tbsp. capers and basil. Quench egg, peel and chop. Mix 2 tablespoons lemon juice, 2 tablespoons olive oil, basil and capers, fold in egg. Arrange the zucchini, spread the egg-capers mixture on top.