TheFork users who ate in Avrillé have said really good things about La Perrière Château et golf, Provence Caffé and 1801 - Les Cuisines du Musée. Maybe you should give them a try!
Some of the more popular Traditional restaurants that offer vegetarian options on their menu in Avrillé according to TheFork users include:
La Perrière Château et golf, with a 9.3 rating
Provence Caffé, with a 9.3 rating
1801 - Les Cuisines du Musée, with a 9.4 rating
In those days what better than a traditional restaurant to retrieve the comfort of eating at home.