This is a really simple dish. There is only one trick to it, which is to start with cold oil so that the prawns stew slowly, rather than frying quickly.
200g of peeled prawns
4 cloves of garlic, peeled and finely sliced
Put plenty of olive oil in a medium sized saucepan. Add the prawns and the garlic and cook over a medium heat until the prawns are cooked. (Don't overcook them; they should be juicy, not tough.)
Sprinkle with a little salt and some parsley and serve.