restaurants in normandy - restaurants in beynac/cazenac

I can't advise about the Périgord.

Those are my picks Normandy, roughly from W to E, from several trips over the past few years:

• if you find yourselves in the Mont St Michel area, I was simply blown away by the Littré in Avranches last September. The lunch menu was the best value French meal I had in years.
• I found pickings were a bit slim towards the D-day beaches, but I really enjoyed La Trinquette in Grandcamp-Maisy for a fish/seafood-focused dinner
• In Bayeux, Le Lion d'Or was a slight disappointment. It was not bad, but expensive for what we got considering the region.
• In Honfleur, there seem to be many good options. I visited Le Bistrot du Port and found it quite good (not 10/10 but a solid 8); reservations were essential on a Sunday lunch.
• In Rouen, La Pêcherie is an excellent seafood restaurant.
• If you visit Lyons La Forêt, I have good memories of a lunch at restaurant de la Halle on the main square
• I never tried it personally, but if you are happy to splurge a little (with menus in the upper double digits), La Table d'Elka in Varengeville is supposed to be excellent. And Varengeville is lovely!
• If you go as far north as Mers-les-Bains (not Normandy but just over the border), L'Itinérance is excellent

Otherwise, as a seafood lover, I never really had a bad meal on the coast of Normandy. A quick check at Google reviews before you go, and you should be good to go!

Curious what time of year, as seafood availability varies seasonally.

To add a few, see below. I've called out Michelin starred places with an asterisk because they're more expensive (typically) and come with a level of service the raters at Michelin seem to prefer yet some (like me) find too intrusive and fussy.

Servon: l'Auberge Sauvage*

Granville: L'Edulis or La Citadelle

Hambye: Auberge de l'Abbaye

If you want to get into the sticks, try to find Krill in La Baliene. If you can find La Baliene you'll find Krill: it's right across from the Marie (the one with a whale vertebrae in the window)

Coutances: Kalamansi or Coté Saint-Pierre

Saint-Denis-le-Vetu: La Baratte

Saint-Lô: l'Intuition* or Les Capucines

If in the summer, La Baie in Regnéville-sur-Mer

Blainveille-sur-Mer: Le Mascaret*

Barneville-Carteret: Marnage - la Marine

Cherbourg: La Pily* or Carabot

Grandcamp-Maisy: Restaurant la Marée

Caen: Ivan Vautier* or Magma

I stayed in Beynac a few years ago. Stayed at the Hotel du Chateau, which has a nice restaurant attached to it. The other place we ate was right at the parking lot for the Chateau - specialty was duck (confit, foie gras). Those are the ones I remember fondly.

Nicholas, in Honfleur we had a wonderful meal at Bois de Homme (recommended by RS).
Will you have a car where you are staying near Beynac? You really should for there is no other way to easily get around the area. Assuming you do have a car I would recommend Chez Ben in LaRoc Gagiac for pizza and excellent salads. For a lovely very French dining experience I would recommend La Petite Borie in Sarlat. While most restaurants in Sarlat seem full of American and British tourists this lovely little restaurant is filled with the French. Excellent duck breast. We also had other excellent meals I just can't remember now exactly what they all were! Similar prices throughout the town.

In Sarlat we had a splurge dinner at Le Grand Bleu, near the Sarlat train station. Superb food and service. At La Roque Gageac, a lunch of excellent open face sandwiches and salads overlooking the river at Les Courtines.