The fall menu at Baron’s Cove restaurant in Sag Harbor includes dishes based on locally sourced ingredients, such as scallops with spaghetti squash from the Milk Pail farm, roasted North Fork fennel and radishes with brown butter vinaigrette, parsnip soup, and cauliflower beignets with a spicy carrot dipping sauce. Maude Muto, the owner and chef at Hampton Herbivore, and a member of the team at the Wellness Foundation of East Hampton, will demonstrate how to make a delicious plant-based dessert at a potluck dinner on Wednesday at 6 p.m. at the South Fork Natural History Museum in Bridgehampton.