Stir together refried beans and cilantro; spread over half of each tortilla. Fold over to enclose filling.
Pour enough oil into large saucepan to come 1 inch up side; heat over medium heat. In two batches, fry tacos for 1 to 2 minutes per side or until golden brown all over.
Serve tacos dorados with shredded lettuce, cheese, sour cream, and salsas (if using) on the side.