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
  • ¾ cup (180ml) vegetable oil
  • 1 ½ teaspoons vanilla extract
  • 1 ½ cups (360ml) buttermilk
  • 2 large eggs
  • ¾ cup (180ml) boiling water
  • 1 cup (2 sticks, 226g) unsalted butter, softened
  • 3 cups (360g) powdered sugar
  • 2 tablespoons milk or heavy cream
  • 1 teaspoon vanilla extract
  • Pinch of salt
  • 2 packets (7g each) unflavored gelatin
  • ½ cup (120ml) cold water
  • ½ cup (120ml) boiling water
  • ¼ cup (60ml) light corn syrup
  • 1 teaspoon clear extract
  • Green food coloring gel
  • Optional: 1/4 teaspoon citric acid
  • 24 Edible Candy Eyeballs (various sizes)

Instructions:

  1. Preheat oven to 350°F (175°C). Line muffin tin with cupcake liners.
  2. Whisk together flour, cocoa powder, baking powder, baking soda, and salt in a large bowl.
  3. In a separate bowl, combine sugar, oil, vanilla, and buttermilk. Add eggs one at a time, mixing well after each addition.
  4. Gradually add the dry ingredients to the wet ingredients, mixing until just combined.
  5. Carefully pour in the boiling water and mix until the batter is smooth.
  6. Fill each cupcake liner about 2/3 full.
  7. Bake for 20-25 minutes, or until a toothpick inserted into the center comes out clean.
  8. Let cupcakes cool in the muffin tin for a few minutes before transferring them to a wire rack to cool completely.
  9. Beat butter until light and fluffy. Gradually add powdered sugar, mixing until smooth. Add milk, vanilla, and salt and beat until fluffy.
  10. Bloom gelatin in cold water. Add boiling water and stir until dissolved. Stir in corn syrup, extract, and food coloring. Optionally, add citric acid.
  11. Refrigerate the gelatin mixture until it is slightly thickened but still pourable (about 1 hour).
  12. Frost cooled cupcakes with buttercream.
  13. Affix edible candy eyeballs onto the buttercream.
  14. Generously drizzle the thickened gelatin slime over the cupcakes, allowing it to drip down the sides.
  15. Allow the slime to set slightly before serving.