Line a baking sheet with parchment paper and set aside. Preheat oven to 400 degrees F.
In a small mixing bowl, pour granulated sugar over strawberries and mix until completely coated. Set aside.
In a medium-sized bowl, sift together dry ingredients: flour, baking powder and salt.
Add butter pieces into bowl of dry ingredients. Cut with a pastry cutter until all ingredients are well-combined.
In a large bowl, whisk together egg and milk. Add dry ingredients into large bowl of wet ingredients. Start mixing with a wooden spoon.
Add strawberries and mix some more. Pour dough onto a clean working surface. Knead it until smooth and then place it onto lined baking sheet, forming it into a circle (about 8 inches in diameter).
Use a serrated knife or a pastry cutter to cut the dough into eighths. Separate each dough piece. Line them up on the prepared baking sheet.
In a small bowl, whisk egg and brush the top of each scone. Top off with granulated sugar.
Bake for 15 to 20 minutes or until top is golden brown. Allow to cool slightly.