White bean gratin "à l'italienne": Stage 4

In a large pan (this could be the same as used to cook the beans), heat 4 tablespoons olive oil over medium heat. When good and hot, add 1 red onion chopped, 1 sprig rosemary, 1 bayleaf and 1 garlic clove.

Salt, pepper and mix well.

Cook while stirring for 1 or 2 minutes.