Fresh fava beans are a delicious springtime treat, with a verdant flavor that makes the shucking and peeling worth the effort. Substituting frozen favas or lima beans is perfectly fine out of season or when time is an issue, but the dish won’t be the same. Instead of garnishing with the parsley, you can stir in 2 to 3 tablespoons chopped fresh herbs like basil, mint, or chives, or a pesto right before serving. Other beans you can use: Just about any fresh or frozen bean, like lima, edamame, black-eyed peas, or cranberry, will be delicious.