Line the bottom and sides of a 9-inch round baking pan with parchment paper. Set aside.
Combine the flour, sugar, baking powder, and salt in a large bowl. Cut the butter into the mixture using a pastry cutter or your fingers until the mixture resembles coarse crumbs about the size of peas or a little smaller.
2 cups all-purpose flour, ⅓ cup granulated sugar, 1 tablespoon baking powder, ½ teaspoon salt, 8 tablespoons unsalted butter
Add the blueberries to the bowl and toss until well coated.
1 heaping cup fresh blueberries
Slowly add the milk until the dough holds together when pressed.
½ cup milk
Lightly flour a work surface, and gently pat the dough into a rectangle about ¾ to 1-inch thick.
Use a 3-inch biscuit cutter to cut the dough without twisting.
Arrange the cut biscuits in the prepared pan making sure their sides touch. Refrigerate for at least 30 minutes. While the biscuits chill, preheat the oven to 425°F.
Bake for 18-23 minutes or until the biscuits are golden brown and cooked through.