Plugrà - Croissant Bread and Butter Pudding with Berries

Ingredients

• 2 tbsp granulated sugar
• ½ tsp ground cinnamon
• 6 tbsp salted Plugrà butter, melted and cooled slightly, plus extra for pan
• ¾ cup granulated sugar
• 1 tsp ground cinnamon
• 4 large eggs
• 1¾ cups heavy cream, plus more for serving
• 1½ tsp vanilla extract
• 5 large croissants (about 15 ounces)
• 2 tsp pure vanilla extract
• 1½ cups mixed berries, plus more for serving