Arrange the greens and mint on a large serving bowl.
Preheat an outdoor grill over medium high heat. Drizzle the the scallions and corn with olive oil and place them on the grill and let char. The scallions will need 1-2 minutes and the corn 6-8. Once grill marks are present, remove from the grill. Slice the scallions into 1 inch pieces and remove the corn from the sob.
Add the grilled vegetables to the serving platter along with the avocado, blistered tomatoes and crumbled goat cheese. Toss everything together and serve with the Lemon Vinaigrette served on the side