Turn on the broiler and place the baguette slices on a baking sheet. Toast them under the broiler until they are golden brown, just a minute or so.
Rub each toasted slice of bread with the garlic clove, and then top each one with a generous tablespoon of the grape mixture. (The amount might vary depending on the size of the baguette.)
Garnish each one with a small basil leaf and serve!
Notes
To remove the Champagne grapes, very gently pull them away from the stems. You can do several at once. Some may still have a very tiny bit of the stem left, so be sure to check and remove any you see, before using them.