Cook the spaghetti in plenty of boiling salted water until al dente.
In the meantime, clean and wash the spring onions and cut into fine rings, wash the tomatoes and cut into slices. Drain the mozzarella and cut into slices. Grate Gouda.
Whisk the milk and eggs well, season with salt and pepper. Stir in the Gouda.
Preheat the oven to 200 ° C top / bottom heat. Line a springform pan (approx. 26 cm in diameter) with baking paper so that the egg milk cannot flow through it.
Drain the spaghetti and place in the springform pan. Pour egg milk on top, place spring onions, tomatoes, salami and mozzarella on top and sprinkle with thyme, oregano and basil. Bake everything in the preheated oven for about 30 minutes. Serve the spaghetti pizza garnished with fresh basil.