01 - Preheat the oven to 425°F. Line a baking sheet with parchment paper.
02 - In a large bowl, whisk together flour, sugar, baking powder, and salt until well combined.
03 - Cut in the cold butter until the mixture resembles coarse crumbs.
04 - Stir in milk and vanilla until just combined. Do not overmix.
05 - Drop spoonfuls of dough onto the prepared baking sheet to form 8 biscuits. Bake for 15-18 minutes, or until golden. Cool completely, then cut into 1-inch pieces.
06 - Combine strawberries with sugar and lemon juice in a bowl. Let macerate for at least 20 minutes to release juices.
07 - In a chilled bowl, whip the heavy cream with powdered sugar and vanilla until soft peaks form.
08 - In a large trifle bowl or individual glasses, layer half of the shortcake pieces, half the strawberries with juices, and half the whipped cream. Repeat layers.
09 - Finish with a decorative layer of whipped cream and a few reserved strawberry slices on top.
10 - Refrigerate for at least 1 hour before serving for best flavor and texture.