01 - Preheat oven to 375°F. Line a baking sheet with parchment paper and set aside.
02 - Whisk together flour, sugar, baking powder, and salt in a large bowl until thoroughly combined. Cut in cold butter using a pastry cutter or fingers until mixture resembles coarse crumbs.
03 - Whisk cream and egg in a small bowl until blended. Pour into flour mixture and stir until just combined, being careful not to overwork the dough.
04 - Turn dough onto a floured surface and pat to ¾-inch thickness. Cut into small rounds using a 2-inch cutter. Place on prepared baking sheet and bake for 12-15 minutes until golden brown. Cool completely, then crumble into small pieces.
05 - Toss diced strawberries with sugar and lemon juice in a bowl. Let stand for 15 minutes, stirring occasionally, to allow fruit to macerate and release juices.
06 - Beat heavy cream with powdered sugar and vanilla extract using an electric mixer or whisk until stiff peaks form. Refrigerate until ready to assemble.
07 - Melt white chocolate or candy melts in a microwave-safe bowl, heating in 30-second intervals and stirring between each until smooth. Divide chocolate and tint with pastel food coloring if desired.
08 - Brush or spoon melted chocolate into silicone Easter egg molds, coating sides evenly. Refrigerate for 10 minutes until set. Apply a second coat for stability and chill again until firm.
09 - Carefully remove chocolate egg halves from molds, handling gently to prevent cracking. Work quickly to avoid melting from warm hands.
10 - Fill half of each chocolate shell with a layer of shortcake crumbs, a spoonful of macerated strawberries, and a dollop of whipped cream. Add additional shortcake crumbs if space allows.
11 - Gently warm the edges of a second shell half using a warm plate or careful microwave heating. Press onto the filled half to seal. Decorate with extra melted chocolate, sprinkles, or edible glitter if desired. Refrigerate until serving time.