Make slices in the French stick 2.5 cm / 1 inch apart, cutting almost all the way through but not quite, so that the slices are still joined at the base.

Mix the garlic with the oil (or whizz with the olive oil in a blender until pureed)

Brush the garlic oil over each cut surface of bread. Push the slices together to reform the loaf, then wrap it in foil, place on a baking sheet and bake in the preheated oven for about 20 minutes until the bread has heated through and is crisp. Serve at once.