Braided Cocoa And Peanut Butter Brioche – Simmer + Sauce

Ingredients

• 1 cup warm whole milk (105 degrees F)
• 2 1/4 teaspoons active dry yeast
• 2 eggs
• 1/2 cup unsalted butter, melted
• 4 teaspoons vanilla extract, divided
• 4 3/4 cups all-purpose flour
• 1/4 cup granulated sugar
• 1 tablespoon kosher salt
• 3/4 cup plus 2/3 cup Confectioners’ sugar, divided
• 2/3 cup creamy peanut butter
• 3 tablespoons unsalted butter, melted
• 1/2 cup unsalted butter, softened
• 1/2 cup chopped bittersweet chocolate, melted
• 1/3 cup cocoa powder
• 1 large egg white
• 1 tablespoon water