Place a Cadbury Creme Egg in a glass and pour 2 oz. | 60 ml of espresso over top. Stir until the Cadbury Creme Egg has dissolved into the espresso. Place the Cadbury Creme Egg espresso, Signal Hill Whisky, and Bottega Nero Chocolate Liqueur into a cocktail shaker with ice and shake. Double strain into a chilled martini glass. Garnish with shaved dark chocolate, 3 espresso beans, and a Cadbury Creme Egg skewer.