Lay out the slices of baguette on a baking sheet and place in the broiler for 3 minutes. Remove from heat and let cool. (Don't turn the oven off.)
Place 2-3 slices of fruit on each piece of bread. Top each one with a few pieces (3-4) of chopped walnut and drizzle with maple syrup.
Place in the broiler for an additional 3 minutes.