Would you give more than 1 star rating for plain cooked pasta with salt and pepper and no extra ingredients? :D
To get more than 1 star, you need to add more ingredients listed as "???" in the recipe, check out the in game shop everyday and you should find eggs and spring onion, they won't show up both at the same time, so keep looking.
For more info visit our wiki page dedicated to cooking minigame
Cheers