Preheat oven to 400 degrees F. Place grapes on a large baking sheet. Drizzle grapes with olive oil and gently toss. Roast for 20-25 minutes or until grapes are soft and slightly shriveled. Let the grapes cool to room temperature.
Place 3 grapes on top of a baguette slice. Top with blue cheese and a drizzle of honey. Serve.
Note-to toast baguette slices-preheat oven to 400 degrees F. Place baguette slices on a large baking sheet and toast until edges are slightly golden and bread begins to toast, about 5 minutes.