Prep Time: 5 minutes
Cook Time: 40 minutes
Ready In: 45 minutes
1. Pre-heat an oven to 355°F (180°C). In a pan over a medium heat, add the olive oil and sauté the leeks with the ½ tsp of salt. The leeks should become softened rather than colored, so take care not to put the heat too high.
3. To the béchamel sauce, add 1 cup of the cheese, and mix until combined.
4. Pour enough of the béchamel sauce into a gratin dish to cover the base, and then add all of the leeks. Then add the rest of the béchamel sauce and combine. Top the dish with the remaining cheese and breadcrumbs, and place into the oven for 30 minutes, or until the top becomes golden brown. To make the breadcrumbs simply crush day old bread until it reaches the required consistency.