1. Can I make Halloween Sugar Cookie Bars ahead of time?

Absolutely! These bars are perfect for making a day or two ahead. Simply store them in an airtight container in the fridge to keep the frosting firm and fresh. You can also freeze the unfrosted bars for up to 2 months, then frost before serving.

2. How do I store leftover Halloween Sugar Cookie Bars?

Store any leftovers in a single layer in an airtight container in the refrigerator. They’ll stay fresh for up to 5 days. If stacking, place parchment paper between layers to prevent sticking.

3. Can I double the recipe for a larger crowd?

Yes! This recipe doubles beautifully. Use a larger baking sheet or a 9x13 pan and extend the baking time by 3–5 minutes. Just keep an eye on the edges for slight browning and test with a toothpick for doneness.

4. What other themes can I use this sugar cookie bar base for?

This sugar cookie bar base is super versatile! Swap the food coloring and sprinkles to fit any occasion— red and green for Christmas , pastels for Easter , or red, white, and blue for the 4th of July . It's the ultimate year-round dessert base for any celebration.

Halloween Sugar Cookie Bars – Easy Frosted Treat for Parties

Name: Halloween Sugar Cookie Bars
Prep time: 10 min
Cook time: 15 min
Total time: 25 min
Cuisine: American
Ingredients: 1 cup butter, softened; 3/4 cup vegetable oil; 1 cup granulated sugar; 1 cup powdered sugar; 2 tablespoons milk; 2 large eggs; 1/2 teaspoon baking powder; 1/2 teaspoon cream of tartar; 1/2 teaspoon kosher salt; 4 cups all-purpose flour; 5 tablespoons butter, softened (for frosting); 1/2 cup sour cream (for frosting); 1 teaspoon pure vanilla extract (for frosting); 4 cups powdered sugar (for frosting); 4-5 tablespoons milk (for frosting); 3-4 drops orange food coloring (for frosting); Halloween sprinkles (for topping)

Description

These Halloween Sugar Cookie Bars are soft, chewy, and frosted with a festive orange buttercream. Perfect for Halloween parties, spooky celebrations, or a fun baking project with kids, this quick and easy recipe delivers a crowd-pleasing treat with minimal effort.

Ingredients

Scale

1 cup butter, softened
3/4 cup vegetable oil
1 cup granulated sugar
1 cup powdered sugar
2 tablespoons milk
2 large eggs
1/2 teaspoon baking powder
1/2 teaspoon cream of tartar
1/2 teaspoon kosher salt
4 cups all-purpose flour
5 tablespoons butter, softened (for frosting)
1/2 cup sour cream (for frosting)
1 teaspoon pure vanilla extract (for frosting)
4 cups powdered sugar (for frosting)
4-5 tablespoons milk (for frosting)
3-4 drops orange food coloring (for frosting)
Halloween sprinkles (for topping)

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Instructions

Preheat oven to 350°F (175°C). Lightly grease a standard baking sheet with oil or line with parchment paper.
In a large mixing bowl or stand mixer, cream together butter, vegetable oil, granulated sugar, and powdered sugar on medium speed for 2 minutes.
Add milk and eggs, mixing until well combined.
In a separate bowl, whisk together baking powder, cream of tartar, salt, and flour.
Gradually mix dry ingredients into wet ingredients until just combined. Do not overmix.
Spread the batter evenly in the prepared baking sheet.
Bake for 12–15 minutes, or until a toothpick inserted in the center comes out clean.
Let the bars cool in the pan for at least 20 minutes before frosting.
For the frosting: In a large bowl, beat together softened butter and sour cream until smooth.
Add vanilla extract and mix well.
Gradually add powdered sugar, mixing until smooth.
Add milk one tablespoon at a time until frosting reaches a spreadable, cake batter-like consistency.
Mix in orange food coloring until evenly colored.
Spread frosting over cooled bars and top with Halloween sprinkles immediately.
Chill slightly before slicing and serving.

Notes

Don’t overmix the dough to keep the bars soft and tender.
Make sure bars are fully cooled before frosting to prevent melting.
Store leftovers in the fridge in an airtight container for up to 5 days.
You can make the bars a day ahead and frost them before serving.

Prep Time: 10 minutes
Cook Time: 15 minutes
Category: Dessert
Method: Baking
Cuisine: American

Nutrition

Serving Size: 1 cookie bar
Calories: 180
Sugar: 21g
Sodium: 95mg
Fat: 8g
Saturated Fat: 4g
Unsaturated Fat: 3g
Trans Fat: 0g
Carbohydrates: 27g
Fiber: 0g
Protein: 1g
Cholesterol: 25mg