Ingredients:

  • 1 ½ cups (192g) all-purpose flour
  • ¾ cup (75g) unsweetened cocoa powder
  • 1 ½ teaspoons baking powder
  • ¾ teaspoon baking soda
  • ¾ teaspoon salt
  • 1 ½ cups (300g) granulated sugar
  • ½ cup (120ml) vegetable oil
  • 1 ½ teaspoons vanilla extract
  • 1 cup (240ml) buttermilk, room temperature
  • 2 large eggs, room temperature
  • ¾ cup (180ml) boiling water
  • 1 (3 ounce/85g) package lime-flavored gelatin
  • 1 cup (240ml) boiling water
  • ½ cup (120ml) cold water
  • 1 cup (2 sticks/226g) unsalted butter, softened
  • 3-4 cups (360-480g) powdered sugar, sifted
  • 2-3 tablespoons milk or heavy cream
  • 1 teaspoon vanilla extract
  • Green food coloring (gel food coloring recommended for vibrancy)
  • 12 large candy eyeballs

Instructions:

  1. Dissolve gelatin in boiling water.
  2. Stir in cold water.
  3. Pour into a greased 8x8 inch pan.
  4. Refrigerate until firm (at least 2 hours).
  5. Preheat oven to 350°F (175°C). Line muffin tin with cupcake liners.
  6. Whisk together dry ingredients (flour through salt).
  7. In a separate bowl, whisk together sugar, oil, vanilla, and buttermilk.
  8. Add eggs, one at a time, mixing well after each addition.
  9. Gradually add dry ingredients to wet ingredients, mixing until just combined.
  10. Slowly pour in boiling water; batter will be thin.
  11. Fill cupcake liners about 2/3 full.
  12. Bake for 20-25 minutes, or until a toothpick inserted into the center comes out clean.
  13. Let cool in the pan for a few minutes, then transfer to a wire rack to cool completely.
  14. Use a small knife or cupcake corer to remove a small portion of the center of each cupcake.
  15. Use cookie cutters to cut slime into small circles.
  16. Fill each cupcake cavity with the lime-flavored slime.
  17. Beat softened butter until light and fluffy.
  18. Gradually add powdered sugar, alternating with milk or cream, until desired consistency is reached.
  19. Add vanilla extract and green food coloring. Mix well.
  20. Frost cupcakes with green buttercream.
  21. Place a candy eyeball on top of each cupcake.
  22. Chill for a few minutes to set frosting.