Courgettes en Salade

• 8 courgettes (4 inches long)
• ½ Spanish onion, finely chopped

Simmer courgettes, unpeeled, in salted water for about 8 minutes. Cut them in half lengthwise, and carefully scoop out seeds. Lay courgettes, cut sides up, in a flat dish. Combine finely-chopped onion and garlic and cover courgettes with this mixture. Sprinkle half the French dressing over them; cover with aluminium foil and allow to marinate in this mixture in the refriger