Coarsely grate the potatoes and mix with a little salt. Let stand for about 5 minutes and then squeeze out vigorously.
Add the chopped onion and the parmesan and season with pepper. Divide the mixture into 4 equal portions and form balls. Heat oil in a pan, add one of the balls and press flat with the spatula. Fry on both sides until crispy and place on a baking sheet. Do the same with the remaining 3 balls.
Top with the boiled ham and sprinkle with the grated Gouda cheese. Bake briefly in the oven at 180 ° C (top / bottom heat). Place the pepper slices in the pan and beat an egg into each slice. Fry the eggs and place on the hash browns. Garnish with chopped spring onions.