Preheat your oven to 400°F and line a baking sheet with parchment paper or a silicone mat.
Measure out 1/4 cup of sugar and set aside 1 tablespoon for mixing with the strawberries.
Toss the strawberries with the reserved tablespoon of sugar and set aside to let the flavors meld.
In a large bowl, whisk together the all-purpose flour, whole wheat flour, remaining sugar, salt, and baking powder.
Using the large holes on a box grater, grate the frozen butter directly into the dry ingredients. Toss gently to coat the butter pieces evenly.
In a separate bowl, combine the cold buttermilk and vanilla extract. Slowly pour the wet mixture into the dry ingredients, stirring gently with a fork until just moistened. Be careful not to overmix.
Gently fold in the sugared strawberries until evenly distributed.
Scoop the dough into 8 large spoonfuls and drop them onto the prepared baking sheet. Avoid compacting the dough to maintain a tender texture.
Sprinkle the tops with the remaining teaspoon of sugar for a delightful crunch.
Bake on the center rack for 18–20 minutes or until the tops are lightly golden.
Allow the scones to cool for about 5 minutes before serving warm. Optional: drizzle with a simple glaze made of powdered sugar and milk.