These Halloween sugar cookie bars are a spooky twist on regular Halloween cookies! Baked and cut into bars, these cookie bars are a delightful Halloween dessert for any Halloween party or classroom party. Plus, they only take 30 minutes of your time, making them a great choice for your Halloween celebrations.

And, this Halloween fudge pairs perfectly with these Halloween cookies bars! Your Halloween party dessert table will look fabulous! Plus, the fudge only requires 10 minutes of your time!
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What You’ll Need For These Halloween Sugar Cookie Bars
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How To Make Halloween Sugar Cookie Bars
Preheat your oven to 350 degrees Fahrenheit.
Line an 18×13 baking sheet with parchment.
In a large mixing bowl, cream together butter, oil, granulated sugar, and powdered sugar.

Add the milk and eggs, and mix until combined.

In a separate bowl, whisk together the baking powder, cream of tartar, salt, and all purpose flour.

Slowly add the dry ingredients to the first bowl, mixing until just combined- careful not to over mix.

Pour the mixture onto the baking sheet and smooth. The batter should go to the edges of the pan. Bake at 350 for 13-15 minutes. Edges will be golden brown and middle will still be pale, but a toothpick inserted in the center shouldn’t come away with any raw batter.

Allow the cookie bars to cool.
For the frosting, in a large mixing bowl, cream together the butter and sour cream.

Add vanilla and mix.
Add powdered sugar and a generous amount of orange gel food coloring, and mix until well combined.

Add milk, as needed for the perfect consistency. The frosting should be pourable. If needed, add additional orange color.
Pour the frosting over the sugar cookie bars and smooth out evenly.

Top with Halloween sprinkles.
Allow the bars to chill in the refrigerator until ready to serve.

Cut into 24 squares and enjoy.
Halloween Desserts
Halloween S’mores Dip– This Halloween s’mores dip is made with classic s’mores ingredients and Halloween peeps, making it a budget-friendly dessert.
Reese’s Oreo Bat Cookies– Your cookies are getting an upgrade this Halloween with these Reese’s Oreo bat cookies! A fudgy cake mix is used for the cookies and they are topped with Reese’s, Oreo’s, and candy eyes to create the most adorable bats ever.
Halloween Sugar Cookie Bars
- Total Time: 30
- Yield: 24 bars 1x
Description
These Halloween sugar cookie bars are soft, festive, and easy to make! A fun no-fuss twist on classic sugar cookies for spooky season.
Ingredients
For the sugar cookie bars:
- 1 cup unsalted butter, softened
- 3/4 cup vegetable oil
- 1 cup granulated sugar
- 1 cup powdered sugar
- 2 tbsp. milk
- 2 large eggs
- 1/2 tsp. baking powder
- 1/2 tsp. cream of tartar
- 1/2 tsp. salt
- 4 cups all purpose flour
For the frosting:
- 5 tbsp. unsalted butter, softened
- 1/2 cup sour cream
- 1 tsp. vanilla extract
- 4 cups powdered sugar
- 3–4 tbsp. milk
- Orange gel food coloring
- Halloween sprinkles
Instructions
- Preheat your oven to 350 degrees Fahrenheit.
- Line an 18×13 baking sheet with parchment.
- In a large mixing bowl, cream together butter, oil, granulated sugar, and powdered sugar.
- Add the milk and eggs, and mix until combined.
- In a separate bowl, whisk together the baking powder, cream of tartar, salt, and all purpose flour.
- Slowly add the dry ingredients to the first bowl, mixing until just combined- careful not to over mix.
- Bake at 350 for 13-15 minutes. Edges will be golden brown and middle will still be pale, but a toothpick inserted in the center shouldn’t come away with any raw batter.
- Allow the cookie bars to cool.
- For the frosting, in a large mixing bowl, cream together the butter and sour cream.
- Add vanilla and mix.
- Add powdered sugar and a generous amount of orange gel food coloring, and mix until well combined.
- Add milk, as needed for the perfect consistency. The frosting should be pourable. If needed, add additional orange color.
- Pour the frosting over the sugar cookie bars and smooth out evenly.
- Top with Halloween sprinkles.
- Allow the bars to chill in the refrigerator until ready to serve.
- Cut into squares and enjoy.
- Prep Time: 15
- Cook Time: 15
- Category: Dessert
- Method: Baking
- Cuisine: American




