Step 1: Prepare the Strawberries : In a bowl, combine sliced strawberries, sugar, and lemon juice. Toss gently, then set aside for 15–20 minutes to macerate, releasing their juices.

Step 2: Make the Shortcake Crust : Preheat oven to 350°F (175°C). In a mixing bowl, combine flour, sugar, baking powder, and salt. Add cold butter and use a pastry cutter or fingers to mix until the mixture resembles coarse crumbs. Add egg and vanilla extract, mixing until a dough forms. Press dough evenly into a 9x9-inch greased baking pan.

Step 3: Bake the Crust : Bake crust in the preheated oven for 20–25 minutes, or until golden brown. Remove from oven and allow to cool completely before adding strawberries and whipped cream.

Step 4: Prepare the Whipped Cream : In a chilled mixing bowl, combine heavy cream, powdered sugar, and vanilla extract. Beat with a hand mixer or stand mixer until soft peaks form. Set aside in the refrigerator until ready to assemble.

Step 5: Assemble the Bars : Once the crust is cool, spread macerated strawberries evenly over the crust. Top with freshly whipped cream, spreading it smoothly across the strawberries. Chill for at least 1 hour to allow the flavors to meld and the whipped cream to set.

Step 6: Serve : Cut into 12 even bars using a sharp knife. Serve chilled, optionally garnished with extra strawberries or mint leaves.