1/2 cup whole milk, warmed
2 1/4 teaspoons active dry yeast
1/4 cup granulated sugar
4 cups all-purpose flour
1/2 teaspoon salt
1 teaspoon vanilla extract
2 large eggs
1/2 cup unsalted butter, softened
1 cup semi-sweet chocolate chips
1/4 cup unsweetened cocoa powder
1/2 cup brown sugar
1/4 cup unsalted butter, melted
1 egg, beaten (for egg wash)
