1 Cook the potatoes in boiling water for 6–8 minutes or until tender, then drain. Place the spinach in a large bowl, cover and microwave for 2–3 minutes or until just wilted, then squeeze the excess liquid out and roughly chop. 2 Meanwhile, heat the oil in a 23cm frying pan and cook the onion for 3–4 minutes until softened. Stir in the potatoes. 3 Beat together the eggs, ricotta, milk and wilted spinach. Pour into the pan, mixing to combine, and cook gently for 4 minutes. 4 Place the pan under a preheated grill for 3–4 minutes until the omelette is golden and completely set. Allow to cool slightly then slide out of the pan, cut into wedges and serve with salad.