Pre-heat the oven to 400°F.
Spread out the Brussels sprouts and grapes in a single layer on a baking sheet lined with parchment paper for easier cleanup.
Drizzle with the olive oil and salt and pepper, to taste. Toss with your hands so that everything is evenly coated.
Roast in the oven for 20 to 30 minutes, tossing half way through, until the Brussels Sprouts are browned and crispy on the outside.
Remove the pan from the oven. Drizzle the glaze over the Brussels sprouts and grapes and serve.
