Mix the eggs with the spinach. Spread the mixture evenly on a baking sheet lined with baking paper. Sprinkle with the grated Gouda and bake for 20 minutes at 200 ° C top / bottom heat.
When the spinach omelette has cooled down completely, brush with herbal cream cheese and top with the salmon. Roll up carefully, wrap in aluminum foil and store in the refrigerator until serving (ideal: 8 hours).