Line 14 wells of a mini muffin pan with paper liners. Place 3 to 4 blueberries in each cup. Set aside.
Melt white chocolate according to package directions. Add 2 tablespoons pistachios and lemon zest, stirring until blended. Divide chocolate mixture evenly among prepared wells of muffin pan. Using a fingertip, smooth tops of candies, if necessary. Sprinkle with remaining 1 tablespoon pistachios.
Refrigerate candies until firm, 1 to 2 hours.
Remove candies from muffin pan, and let come to room temperature before serving.
Notes
Make-Ahead Tip: Candies can be made a day in advance and refrigerated in a covered container for up to a day.
Kitchen Tip: To divide chocolate mixture easily and evenly among prepared pans, use a levered 1-tablespoon scoop.
Recipe by TeaTime Magazine at https://teatimemagazine.com/white-chocolate-blueberry-pistachio-candies-recipe/