Halloween Spider Web Cookie Cake

Overhead view of spider web cookie cake on a table with Halloween decorations.

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Halloween Spider Web Cookie Cake

A fudgy brownie cookie cake topped with buttercream and a spooky spider web design, perfect for Halloween! Fun, festive, and easy for parties!

Course Baking, Dessert

Cuisine American

Diet Vegetarian

Prep Time 25

Cook Time 35

Servings servings

Calories 70kcal

Author Lise Sullivan Ode

Equipment

Ingredients

For the cookie cake

1 Brownie mix (18 ounces) I used Ghirardelli
1/4 cup water
1/3 cup vegetable oil or 1 stick melted butter
1 egg, room temperature

For the frosting

1/2 cup butter, softened (1 stick)
8 ounces powdered sugar or 2 cups
1/2 teaspoon vanilla extract
2 tablespoons heavy whipping cream or milk or a little more if frosting is too thick

For the decoration

7 plastic spiders (not edible) or make m&m candy spiders with candy melts
Black food coloring gel

Instructions

For the cookie cake

Preheat oven to 350°F. Line a 12-inch pizza pan with foil and grease the foil with butter or oil. Prepare brownie mix according to package directions, then spread evenly in the pan. Bake for 25-30 minutes, being careful not to overbake. Remove from oven and cool completely.

For the frosting

In a large bowl, beat softened butter with an electric or stand mixer on medium speed for about 3 minutes, until smooth and creamy. With the mixer on low, gradually add the powdered sugar, cream, and vanilla extract. Increase to high speed and beat for another 3 minutes, until light and fluffy. If the frosting is too thick, add more cream one teaspoon at a time, mixing well after each addition, until the desired consistency is reached. Reserve ¼ cup of frosting and tint it black for the spider web design.
Frost the cooled brownie evenly with the buttercream frosting. To create the spider web, transfer the black frosting to a small zip-top bag and snip a tiny corner. Pipe a spiral pattern starting from the center, keeping the lines about ¾ inch apart. Using a toothpick or the tip of a knife, gently drag lines outward from the center to the edges to form the web design. Add plastic spiders, if desired (to remove before eating).
Serve the Spider Web Cookie Cake sliced into wedges, just like a pizza, for easy sharing at Halloween parties or family gatherings. Store any leftovers covered in the refrigerator for up to 3 days. For the best texture, let slices come to room temperature before serving.

Video

Notes

How to serve and store: Slice the cookie cake into wedges, just like a pizza, for easy serving at parties. Store leftovers covered in the refrigerator for up to 3 days. Bring to room temperature before serving for the best texture.

Nutrition