Truffade auvergnate (sort of :)

Sometime ago, I was honored to accompany my son's class to a field trip in Auvergne (a french region), more precisely in Cantal a department in south-central France, with its capital at Aurillac.
We spent a dreaming week in a farm surrounded by animals, warm-hearted people and a beautiful, green scenery thanks to the volcanoes that the region is known for.
One of the last dinners, we had the chance to try one of their typical dishes, the delicious "Truffade Auvergnate" which is a sort of a thick pancake made with sliced potatoes, garlic and cheese (more precisely the variety called "fresh tomme" or Cantal jeune). For more information, search the web, for example wikipedia. After some scooping on the web, I've found that there exists also a similar recipe, "The Aligot", but I have never tried it yet. Maybe the next time that I will visit the region :)
Cheese is one of the typical products there, with Cantal cheese (one of the oldest in France, from the time of Gauls) but also Saint- Nectaire and Salers.
Cantal cheese is a firm (semi-hard) cheese, made from raw or pasteurized cow's milk from the Salers breed. According to the time of aging, it can be found in three varieties:

• Cantal jeune (1-2 months aged)
• Cantal entre deux (2-6 months)
• Cantal vieux ( more than 6 months)

In the recipe that I will provide you today (easy but so tasty!), I have used Cantal entre deux, that was the only one that I could find easily (sorry Celian for not being too concentrated the day that you proposed me to buy some when we were there, but I can now admit that I have some intolerance and that kind of cheese it always scares me :) 
Here it goes ....