Pan de Coco (Coconut Bread)

Ingredients

• 3 cups bread flour
• 1 1-1/2 cups all purpose flour
• 1/4 cup + 1/2 tbsp sugar, divided
• 1/2 tsp salt
• 2 1/4 tsp yeast
• 3 egg yolks
• 3/4 cup fresh milk
• 1/2 cup butter, melted
• 1/2 cup lukewarm water
• 1 cup brown sugar
• 1 cup desiccated coconut
• 2 tbsp softened butter
• 3 tbsp condensed milk
• 1 tsp vanilla
• 1 egg
• 1 tbsp water
• pinch of salt (optional)