Prepare all ingredients:
Make a shortcrust pastry.
Peel the leeks keeping only the whites. Wash them and thinly them.
them in butter on low heat for 8 to 10 minutes.
the shortcrust pastry...
...and in a silicone mini-tart mold.
In a bowl...
...beat the eggs along with crème fraîche, salt, pepper.
Add the leeks...
...and the chopped smoked salmon. Adjust seasoning.
Garnish the bottoms of tarts with this peparation.
Bake in hot oven, 180°C...
...for 20 to 25 minutes.
When finished, take out of the oven.
Unmold and let's cool.