1Preheat oven to 400 degrees. Place the edamame, corn, green onion, garlic, olive oil, salt and pepper into a 13 by 9 metal pan and stir to combine.
Place on the middle rack of the oven and roast 10-15 min. until edamame begins to light brown.
2Remove from the oven and place in refrigerate until completely cool, about 30 min.
3Add the tomato, basil and vinegar to vegetable mixture and toss to combine.
Taste and adjust seasoning as needed.