Nutella Stuffed French Toast

Bahan-bahan (16 porsi)

• 3 large eggs
• 2 large egg yolks
• 1 ¼ cup half and half (or light cream)
• 1 ½ tablespoons light brown sugar
• ½ teaspoon salt
• 2 ½ teaspoons cinnamon (divided)
• 2 loaves brioche bread (16 ounces each, approximately 16 1-inch slices)
• 1 cup Nutella
• ¾ cup granulated sugar
• 8 tablespoons melted butter
• chocolate sauce (and whipped cream for serving, optional)