Bake Fluorescent Cupcakes!

Amazingly enough, these fluorescent cupcakes are 100% edible! Thanks to the quinine in tonic water, we have a no fail recipe that you and your students can follow to make your own – just in time for a Halloween lesson on fluorescence at the end of the recipe! Enjoy with your classroom.

Grade Range: 1 to 14

Duration: 2-4 Hours


  • 1 Black Light (be sure it is in the Ultra Violet range: <405nm)
  • 24 cooled cupcakes
  • 7 cups confectioners sugar
  • 1 C vegetable shortening
  • 1 tsp clear vanilla extract
  • 0.3 ounce package of LIME gelatin
  • 1 C boiling water
  • 1 C chilled tonic water (with quinine)
  • 3-5 Tbsp tonic water (diet works also) chocolate chips

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