Mom's Baked French Toast

Ingredients

• 8 ounces French bread, day-old, unsliced
• 4 large eggs
• 2 tablespoons sugar
• 1 tablespoon brown sugar
• 2 teaspoons vanilla extract
• 1 teaspoon maple extract or 1 tablespoon maple syrup
• 1/4 teaspoon kosher salt
• 2 cups whole milk
• 1/2 cup heavy cream
• 1/4 cup all-purpose flour
• 3 tablespoons brown sugar
• 3 tablespoons unsalted butter, cut into 1/4-inch cubes
• 1 teaspoon ground cinnamon
• freshly grated nutmeg, optional, to taste
• fresh blueberries or raspberries, optional, to taste, for serving
• confectioners' sugar, optional, to taste, for serving