Halve the onion and slice. Boil the potatoes and slice them as well. Roughly dice the liver loaf and courgette. Remove the core from the pepper and halve and slice the pepper. Heat the olive oil in a pan, sauté the onion, add the meatloaf, potatoes and courgettes and fry. When the meatloaf has taken on colour, add the peas and peppers. Then add the spices and season to taste.