Preheat oven to 400°. Line a baking sheet with parchment paper.
For biscuits: In a large bowl, stir together flour, brown sugar, and zest. Using two forks or a pastry blender, cut in cold butter until mixture is crumbly. Stir in blueberries, sour cream, and buttermilk until dough comes together. Drop dough 2 inches apart on prepared pan. Sprinkle with turbinado sugar.
Bake until golden brown, about 15 minutes.
For glaze: In a small bowl, whisk together confectioners’ sugar and lemon juice until smooth. Drizzle glaze over warm biscuits.
Notes
*We used White Lily.
Recipe by Southern Lady Magazine at https://southernladymagazine.com/blueberry-sour-cream-drop-biscuits-recipe/