Set oven rack 6 inches below heat source and set broiler to high.
Slice french bread in half horizontally and place on a baking sheet cut side up. Broil for 30 seconds or until bread is golden brown. Do not leave the oven unattended or the bread might burn!
Reduce oven temperature to 375 degrees.
Arrange desired toppings over each cut-side of bread. Bake until warmed through and/or cheese has melted, about 15 minutes. Cut into slices and serve immediately.