Place frozen shelled edamame in a microwave-safe bowl with 2 tablespoons of water. Cover and cook on high for 6 to 8 minutes, stirring halfway through cooking time. Let stand covered 1 minute.
Meanwhile heat oil in large skillet on medium-high heat. Add sliced mushrooms and saute for 5 minutes. Add soy sauce, garlic, fried rice seasoning, and cooked and drained edamame. Stir to combine. Serve hot.