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 using a pastry blender or two knives until the mixture resembles coarse crumbs.
04 - Stir in milk and vanilla until just combined. Be careful not to overmix the dough.
05 - Drop spoonfuls of dough onto the prepared baking sheet to form 8 biscuits. Bake for 15-18 minutes, or until golden brown. Cool completely, then cut into 1-inch pieces.
06 - Combine strawberries with sugar and lemon juice in a bowl. Let sit for at least 20 minutes to release natural juices.
07 - In a chilled bowl, whip the heavy cream with powdered sugar and vanilla using an electric mixer until soft peaks form.
08 - In a large trifle bowl or individual glasses, layer half of the shortcake pieces on the bottom.
09 - Spread half the macerated strawberries with their juices over the shortcake layer.
10 - Spread half of the whipped cream over the strawberry layer. Repeat the layering process with remaining ingredients.
11 - Finish with a decorative layer of whipped cream and reserved strawberry slices on top. Refrigerate for at least 1 hour before serving.