Er, just use less ingredients? Honestly it's not rocket science. If a recipe says it makes 4 portions divide by 2 or 4. Go mad, experiment. Even if you follow a recipe exactly it doesn't mean it'll necessarily turn out the way you like it.

I like soup, I like to make my own soup. Soup is down right impossible to make in single portion batches. But as has already been stated, this is where the freezer is your friend. Look at it this way. If you find you really one recipe, you can a huge batch and freeze it and you only have to cook the once!!!

Cooking's all about taste - what are you hungry for?