Wash the potatoes and cook in boiling water for about 20 minutes. Wash and clean the zucchini and spring onions. Cut the courgettes into thin slices and the spring onions into rings. Drain potatoes, quench and peel. Cut into thin slices. Grease 4 ovenproof tartlets (approx. 12 cm Ø; 125 ml content) and line with courgette and potato slices.
Whisk eggs, season and spread over the vegetables. Bake in the preheated oven (electric cooker: 200 °C/ gas: level 3) for approx. 30 minutes. Sprinkle spring onions on top about 5 minutes before the end of cooking time. Take out the tortillas, turn them over and arrange them. Garnish as desired with a chilli pepper