Description
These Slimer Ghostbusters Cupcakes are a fun and delicious treat featuring fluffy lime cupcakes filled with a tangy lime curd slime filling and topped with vibrant electric green frosting. Inspired by the iconic Ghostbusters character Slimer, these cupcakes combine bright citrus flavors with a spooky, playful presentation perfect for themed parties or Halloween celebrations.
Ingredients
Scale
Cupcakes
- 6 Tbsp (3/4 stick) unsalted butter, room temperature (85g)
- 3/4 cup granulated sugar (150g)
- 1/3 cup carton egg whites or 3 large egg whites, room temperature (90g)
- 1/3 cup full-fat sour cream, room temperature (80g)
- 1/3 cup whole milk, room temperature (80g)
- 1/4 cup lime juice (60g)
- 1 tsp vanilla extract or vanilla bean paste (4g)
- 2 tsp lime zest (4g)
- green gel food coloring
- 1 1/4 cups all-purpose flour (165g)
- 2 tsp baking powder (8g)
- 1/4 tsp fine salt (2g)
- 3 large eggs, room temperature (168g)
- 3/4 cup granulated sugar (150g)
- 1/4 tsp fine salt (2g)
Lime Curd Slime Filling
- 1/2 cup fresh lime juice (120g)
- 1 Tbsp lime zest (6g)
- 6 Tbsp (3/4 stick) unsalted butter, room temperature (85g)
- electric green gel food coloring
Frosting
- 1 cup unsalted butter, room temperature (226g)
- 2 Tbsp lime juice (12g)
- 1 tsp lime zest (2g)
- 1 tsp vanilla extract or vanilla bean paste (4g)
- 1/2 tsp fine salt (3g)
- 3 1/2 cups powdered sugar (452g or 1 lb. box)
- electric green gel food coloring
Decorations
- 1/4 cup red fondant
- 1/4 cup black fondant
- 1 Tbsp yellow fondant
- 1 Tbsp white fondant
Instructions
- Prepare the Cupcake Batter: In a large bowl, cream together the 6 tablespoons unsalted butter and 3/4 cup granulated sugar until light and fluffy. Add the 1/3 cup egg whites, 1/3 cup sour cream, 1/3 cup whole milk, 1/4 cup lime juice, vanilla extract, lime zest, and green gel food coloring. Mix until fully combined.
- Combine Dry Ingredients: In a separate bowl, sift together the all-purpose flour, baking powder, and 1/4 teaspoon salt. Gradually add the dry ingredients to the wet mixture, stirring until just combined.
- Whip Eggs and Sugar: In another bowl, beat the 3 large eggs with 3/4 cup granulated sugar and 1/4 teaspoon salt until pale and fluffy. Gently fold this egg mixture into the cupcake batter to lighten the texture.
- Bake the Cupcakes: Preheat the oven to 350°F (175°C). Line a cupcake pan with liners, then divide the batter evenly among 12 cups. Bake for 15 minutes or until a toothpick inserted into the center comes out clean. Let cool completely before filling.
- Make the Lime Curd Slime Filling: In a saucepan over low heat, combine the lime juice, lime zest, and butter. Stir continuously until the butter melts and the mixture thickens slightly. Add electric green gel food coloring to achieve a slime-like vibrant color. Allow to cool to room temperature.
- Fill the Cupcakes: Using a small knife or cupcake corer, carefully remove the center of each cooled cupcake and fill with the lime curd slime filling. Replace the removed cake piece on top to seal.
- Prepare the Frosting: In a large bowl, beat the unsalted butter until creamy. Add the lime juice, lime zest, vanilla extract, fine salt, and electric green gel food coloring. Gradually add the powdered sugar and beat until frosting is light and fluffy.
- Frost the Cupcakes: Pipe or spread the electric green frosting generously over each cupcake to create a gooey, slime-like appearance reminiscent of Slimer.
- Create Fondant Decorations: Use the red, black, yellow, and white fondant to shape small decorations that resemble Slimer’s eyes, mouth, and other facial features. Place these on top of the frosted cupcakes for a fun and spooky finishing touch.
Notes
- These Ghostbusters-inspired Slimer cupcakes are made with fluffy lime cupcakes and tangy lime curd slime filling for a spooky and delicious treat.
- Ensure all ingredients are at room temperature for best mixing results and texture.
- The green gel food coloring helps achieve the signature slime color, use sparingly until desired shade is achieved.
- Fondant decorations can be made ahead of time and stored in an airtight container until ready to use.
- Store cupcakes in an airtight container in the refrigerator and bring to room temperature before serving for optimal flavor.
Nutrition
- Serving Size: 1 cupcake (approx. 100g)
- Calories: 556 kcal
- Sugar: 58 g
- Sodium: 417 mg
- Fat: 30 g
- Saturated Fat: 18 g
- Unsaturated Fat: 10 g
- Trans Fat: 1 g
- Carbohydrates: 70 g
- Fiber: 1 g
- Protein: 5 g
- Cholesterol: 122 mg
