Blackberry White Chocolate Drop Biscuits

Ingredients

• 2 1/2 cups all purpose flour (plus extra for dusting)
• 3 tablespoons brown sugar
• 5 tablespoons regular sugar (divided)
• 2 teaspoons baking powder
• 1 teaspoon baking soda
• 1 teaspoon kosher salt
• 1 stick of cold butter (chopped into small cubes)
• 1 cup buttermilk
• 2 teaspoons vanilla extract
• 1 teaspoon fresh rosemary (finely chopped)
• 3 tablespoons blackberry jelly
• 1//4 cup fresh blackberries (roughly squashed)
• 1 cup white chocolate chips (divided)