Brown Butter Chocolate Chip Blondies

Ingredients

• 1 cup unsalted butter (browned and cooled for ~10 mins )
• 1 Tbsp. vanilla bean paste (optional)
• 3/4 cup dark brown sugar (packed)
• 3/4 cup granulated sugar
• 2 large eggs (room temperature)
• 2 tsp. vanilla extract
• 1 3/4 cups all purpose-flour (spooned & leveled)
• 1 1/2 tsp. baking powder
• 1 tsp. salt
• 1 cup semisweet chocolate chips (plus more for garnish)
• flaky sea salt (for garnish)