Cookwith - Sea Salt Chocolate Babka

Ingredients

• 3 cups all-purpose flour
• 1/4 cup granulated sugar
• 2 1/4 tsp instant yeast
• 1/2 tsp fine sea salt
• 2/3 cup whole milk, lukewarm
• 2 large eggs, room temperature
• 1/3 cup unsalted butter, softened
• 1 tsp vanilla extract
• 1 cup semi-sweet chocolate chips
• 1/2 cup unsalted butter, softened (for filling)
• 1/2 cup brown sugar (for filling)
• 1/4 cup cocoa powder (for filling)
• 1/2 tsp flaky sea salt
• 1 egg (for egg wash)