Preheat oven to 425F.
Add red grapes to a baking sheet.
Drizzle with oil and toss to coat. Sprinkle with sea salt. Arrange on a baking sheet in a single layer.
Bake at 425F for 15-20 minutes, until the grapes start to burst, have slightly blistered skin and have shrunk in size.
Remove from the oven and let cool slightly before transferring to a serving dish.
Calories: 41kcal | Carbohydrates: 6g | Fat: 1g | Sodium: 37mg | Potassium: 72mg | Sugar: 5g | Vitamin A: 25IU | Vitamin C: 1.2mg | Calcium: 4mg | Iron: 0.1mg