It's not particularly near Menerbes but CooknwithClass in Uzès is excellent. I did a bread masterclass with them last year. Eric is extremely knowledgeable and great fun to be with. Full disclosure: I've known Eric for many years, as I used to look after his website till I retired.
I have a second home in Bonnieux and have led small group tours in the Luberon since 2006.
I organized a cooking class with Jean-Marc Villard forr a special group in September. He's located in Maubec, maybe five miles from Menerbes. It was a highlight of our week.. Jean-Marc taught at the Paul Bocuse Institute in Lyon for many years before moving to Provence and starting his own cooking school. He and his wife are fabulous people. Our group learned a lot and we all loved the meal and the experience. I plan to incorporate this into another special week in 2021.