Begin by slicing the pound cake into small bite-sized squares, approximately 1-inch in size.

In a microwave-safe bowl, gently warm the vanilla frosting or melting white chocolate for about 20-30 seconds until smooth. Dip each pound cake square into the coating.

While the coating is still wet, sprinkle your choice of decorative sprinkles over each petit four.

Carefully transfer the coated petit fours onto a wire rack or parchment paper and allow them to set for about 30 minutes at room temperature.

Once set, arrange the petit fours on a platter and serve at room temperature.