Combine the sugar and sliced strawberries in a bowl and set aside to macerate until the berries release a little syrup.
Lightly whisk the eggs, milk, and salt in a shallow bowl.
Melt the butter in a large frying pan over medium-high heat.
Dip each side of each baguette slice into the egg mixture for 3 seconds per side. Place the slices in the pan and fry each side for 2 1/2 minutes, until nicely browned.
Remove the French toast from the pan and serve topped with the macerated strawberries and their syrup, maple syrup, and confectioners sugar if using.
Notes
Nutrition varies with the amount of maple syrup and other toppings used.