The short answer: Yes, but only occasionally.
The long answer: A type of immature soybeans, edamame are legumes that are rich in protein, fiber, antioxidants, and vitamin K. They are harvested before they become ripe, and are often cooked and served in their pods. However, only the soft green seeds are edible.
Cats may be given a few pieces of edamame as long as they are cooked correctly. With your veterinarian’s approval, you can give your cat edamame as snacks depending on her weight, size, activity levels, and health conditions. Raw and undercooked edamame are another matter. They should never be given to your cat since they may have lectins or bacteria. If your cat consumes raw or undercooked edamame, she may suffer from vomiting, bloating, gas, nausea, diarrhea, and other digestive complications.
How to feed edamame to your cat: Fresh or frozen edamame should be prepared without flavouring and thoroughly cooked before being given to your cat. Boil or steam them with water. When completely cooked, the soft seeds will easily slip out of the pods. Discard the pods properly, so your cat does not eat them by accident.
Let your cat try a small portion of an edamame seed to see if her stomach can handle it. If she displays no adverse effects in the next 24 hours, you can increase the portion the next time you feed her.
In summary: Edamame seeds may be given to your cat occasionally as a treat. This should only make up five to 10% of her daily caloric intake. Do not allow her to eat too much edamame because the fiber-rich legume might cause her to have diarrhea or indigestion.