Preheat the oven to 400°F (200°C).
Lay the baguette halves on a baking sheet, cut side up. Spread pizza sauce evenly over each half.
Sprinkle shredded mozzarella cheese over the sauce.
Add your favorite pizza toppings on top of the cheese.
Place the baking sheet with the prepared French bread pizzas in the preheated oven and bake for about 10 - 12 minutes or until the cheese is melted and bubbly, and the edges of the baguette are slightly crispy.
Remove the French bread pizzas from the oven and let them cool slightly before slicing them into individual portions.
For the lemonade, mix the lemon juice, water, and sugar, to taste. Serve over ice if desired.
Serve the French bread pizza with the homemade lemonade.