01 - Preheat oven to 375°F. Line a baking sheet with parchment paper.
02 - Whisk flour, sugar, baking powder, and salt in a large bowl. Cut in cold butter until mixture resembles coarse crumbs. Whisk cream and egg separately, then add to flour mixture. Stir until just combined.
03 - Turn dough onto floured surface. Pat to ¾-inch thickness. Cut into small rounds using a 2-inch cutter. Place on baking sheet. Bake for 12-15 minutes until golden. Cool completely, then crumble into small pieces.
04 - Toss diced strawberries with sugar and lemon juice. Let stand for 15 minutes to release juices.
05 - Whip heavy cream with powdered sugar and vanilla extract until stiff peaks form.
06 - Melt white chocolate in microwave-safe bowl in 30-second intervals, stirring until smooth. Divide and tint with pastel coloring if desired. Brush chocolate into silicone Easter egg molds, coating sides evenly. Refrigerate 10 minutes. Add second coat and chill until firm.
07 - Carefully unmold chocolate egg halves. Fill half shells with layer of shortcake crumbs, spoonful of strawberries, and dollop of whipped cream. Gently warm edges of second shell half and press onto filled half to seal.
08 - Decorate with extra melted chocolate, sprinkles, or edible glitter if desired. Refrigerate until ready to serve.