01 - Preheat oven to 425°F. Line a baking sheet with parchment paper.
02 - In a large bowl, whisk together flour, sugar, baking powder, and salt.
03 - Add cold butter and use a pastry cutter or fingertips to blend until mixture resembles coarse crumbs.
04 - Stir in cold milk just until dough comes together. Do not overmix.
05 - Turn dough onto a lightly floured surface. Gently pat into a 1-inch thick rectangle. Cut into 6 rounds using a 2.5-inch biscuit cutter, reshaping scraps as needed.
06 - Place biscuits on the prepared baking sheet. Brush tops lightly with beaten egg.
07 - Bake for 15–18 minutes until golden and cooked through. Cool on a wire rack.
08 - Combine strawberries, sugar, and lemon juice in a bowl. Let sit for at least 20 minutes to macerate and release juices.
09 - Beat heavy cream, powdered sugar, and vanilla with a mixer until soft peaks form.
10 - Split cooled biscuits in half. Spoon strawberries and juices over bottom halves. Dollop with whipped cream, then top with remaining biscuit halves. Serve immediately.