Preheat your oven to 190°C / 375°F. Wash and dry cherry tomatoes. Put them in a shallow gratin dish. They must cover the entire bottom of your dish. They can even be a bit packed. Sprinkle salt and pepper. Pour a tablespoon of olive oil and mix so that tomatoes are coated with olive oil on all sides.
Bake for 15 to 20 minutes. The tomatoes will start to cook, crack, and lose some of their vegetation water. Their aspect becomes somewhat withered.
Prepare flan
Meanwhile, make your flan preparation. Beat 2 eggs as you would do for an omelet. Add milk and mix. Wash and dry chives. Cut chives into small parts of ½ to 1 centimeter. Add chives to the preparation and mix.
Remove from the oven the cherry tomatoes. Lower the oven heat to 180°C / 350°F. Remove the juice (you can keep it; you‘ll see below how to use it).
Bake
Pour the flan preparation over the tomatoes and bake for 20 minutes at 180°C / 350°F.
Notes
The main steps of the recipe: Bake tomatoes in olive oil in the oven. Remove the tomatoes cooking juices. Prepare the flan mix, pour over tomatoes, and bake.Quantities depend on the size of your plate. You may have to double the quantities.Serve with a green salad (you can season the dressing by adding the tomato juice you removed earlier)