Wash the strawberries, blot them with paper towels and then lay out on the paper towels to dry. The strawberries must be completely dry before dipping.
Line a cookie sheet with parchment paper.
Put the blue sugar sprinkles on a plate.
Break up the white chocolate bar into pieces and put in a microwave-safe bowl. Put it in a microwave and microwave of Low (Defrost) setting for 1 minute. Stir. Continue microwaving and stirring in 30 second increments until the white chocolate is melted.
Take each strawberry by holding it by the green stem with 2 fingers, dip it in the melted white chocolate, then dip the bottom into the blue sugar sprinkles. Put the dipped strawberry on parchment paper.
Leave the chocolate-covered strawberries on the counter and serve within 4 hours. The chocolate will set in 1 hour.
Notes
Make sure you use the white chocolate baking bar, and not the white chocolate chips (the white chocolate chips do not melt well).