Preheat oven to 425°F (220°C). In a large bowl, whisk flour, sugar, baking powder, and salt together.
Cut in the cold diced butter with a pastry cutter or fingers until mixture resembles coarse crumbs.
Add milk and stir gently just until the dough comes together. Do not overmix.
Turn dough onto a floured surface and knead lightly. Pat into a 1-inch thick circle and cut into 6 biscuits.
Place biscuits onto a baking sheet and bake for 12-15 minutes or until golden brown. Let cool.
Meanwhile, toss sliced strawberries with 0.25 cup powdered sugar and set aside to macerate.
Whip heavy cream with 2 tablespoons powdered sugar and vanilla extract until soft peaks form.
Slice cooled biscuits in half horizontally. Layer the base with macerated strawberries, then whipped cream. Top with biscuit tops and more cream and strawberries.
Notes
Serve immediately for best texture. Leftovers can be refrigerated but biscuits may soften.