Ingredients:

• 16-ounce French brioche loaf, cut into 3/4-inch cubes (12 cups)
• 1 tablespoon unsalted butter (softened)
• 8 large eggs
• 4 cups half-and-half
• 1/2 cup (100 g) granulated sugar
• 1/2 cup (100 g) dark brown sugar, packed
• 1 tablespoon pure vanilla extract (bourbon vanilla recommended)
• 1 1/2 teaspoons ground cinnamon
• 1/4 teaspoon ground nutmeg
• 1/4 teaspoon kosher salt
• 3 medium ripe bananas, mashed
• For the caramel sauce (Makes about 1 cup):
• 1 cup (200 g) sugar
• 1/4 cup water
• 1/4 cup heavy cream
• 4 tablespoons unsalted butter
• 1/4 teaspoon cinnamon
• 1/8 teaspoon salt