Peel and dice the potato into 1cm cubes. Rinse in water and drain. Place the potato, green peas, and 1 tbsp water in a microwave-safe container. Cover loosely with plastic wrap and microwave at 600W for 2 minutes. Drain water.

Slice the sausages into 1cm pieces.

Heat half the olive oil (1/2 tbsp) in a frying pan over medium heat. Add sausages, potatoes, and green peas. Sauté for 2–3 minutes until sausages are lightly browned. Remove and let cool.

In a bowl, beat the eggs and mix in salt, pepper, and grated cheese. Add the sautéed ingredients and mix well.

Heat the remaining olive oil (1/2 tbsp) in the frying pan over medium heat. Pour in the egg mixture and stir gently until semi-cooked. Cover with a lid and cook on low heat for 5–6 minutes.

Place a plate larger than the pan over it, flip the omelette onto the plate, and slide it back into the pan. Cook uncovered on low heat for another 3 minutes until browned.