Orange flavored sweet potato gratin

Preparation:

1. Peel and rinse the sweet potatoes and cut them into thick slices (about 1 cm).
2. Boil the potatoes with salt and the cinnamon stick until they are cooked but still firm. Stick the tip of a knife into a slice to check, about 8 to 10 minutes are enough.
3. Meanwhile, wash the orange and grate the zest.
4. Beat the eggs into an omelette, add the cream, half the cheese, salt and pepper, grate some nutmeg.
5. Add the drops of natural orange flavor.
6. Preheat your oven to 180°.
7. Butter a gratin dish, add the sweet potatoes, cover with the flan and add the remaining cheese.
8. Put in the oven for 30 minutes and enjoy!

Good tasting !