Break 16 oz white chocolate baking bars into smaller pieces and place them in a heat-resistant bowl. Add 1 tablespoon butter on top and set aside.
Pour ? cup heavy whipping cream into a saucepan. Heat over medium-high heat, whisking occasionally, until the cream just starts to boil.
Remove the saucepan from the heat. Stir in the zest of 1 lemon and ½ teaspoon lemon extract, and whisk until combined.
Pour the warm cream mixture over the white chocolate and butter. Stir with a large wooden spoon until the chocolate is melted and smooth. Add yellow food coloring and stir until the mixture is a vibrant yellow color.
Cover and refrigerate until the mixture is firm (1-2 hours).
Remove from the refrigerator and shape into 1 inch balls.
Roll the truffles in ¼ cup powdered sugar and place them on a baking sheet lined with parchment paper. Continue until all the truffles are coated.
Place the truffles in the refrigerator until ready to serve. Enjoy!
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Notes
Make sure to use high quality chocolate for the best results for these lemon truffles. You can roll the truffles in sprinkles instead of the powdered sugar before serving if you prefer. Make sure that you stir the mixture with either a wooden spoon for the best results as it helps move the heat evenly throughout the mixture. Store any leftovers in an airtight container for up to 4-5 days.