Mollie Katzen, author of the 1977 vegetarian bible, “The Moosewood Cookbook,” talks about the intersection between her kosher upbringing and her commitment to sustainable, healthy cooking.

My two go-to, protein-rich vegan meals are both Moosewood recipes (from the Sundays at Moosewood Restaurant cookbook). One is a red lentil dahl with tomatoes and spinach added (you can use canned ...