My Halloween Reese's Pieces bars are an easy-to-make, festive treat with a delightful combination of peanut butter and chocolate! They're loaded with Reese's pieces and mini chocolate chips, then topped with candy eyeballs for a fun and eerie twist! Perfect for Halloween parties or simply sharing with friends or coworkers, these dessert bars are guaranteed to be a crowd-pleaser!
Easy Reese's Halloween Dessert Bars
When it comes to desserts, there's nothing more that I like than shareable treats that are easy to prepare! Whether they are cookies, brownies, blondies, or other fabulous dessert bars, I love creating new recipes to enjoy with my family.
If your family loves the classic combination of peanut butter and chocolate, then these Halloween Reese's Pieces bars are just what you are looking for! With spooky candy eyeballs as the final touch, these bars are perfect for Halloween parties or 'Boo-ing' your neighbors!
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🥘 Halloween Reese's Pieces Bars Ingredients, Notes & Substitutions
It might seem like a long list of ingredients, but it mostly consists of common baking staples you may already have in your pantry! Just pick up some Reese's Pieces and candy eyeballs to make these treats fun and spooky!
- Butter - ½ cup of butter softened at room temperature or a butter substitute.
- Light Brown Sugar - 2 cups of packed light brown sugar or use a light brown sugar substitute.
- Creamy Peanut Butter - ½ cup of creamy peanut butter or a creamy peanut butter substitute.
- Eggs - 2 large eggs at room temperature.
- Vanilla Extract - 1 tablespoon of vanilla extract or a vanilla extract substitute.
- Baking Soda - 1 teaspoon of baking soda substitute.
- Salt - ¾ teaspoon of salt.
- All-Purpose Flour - 2¼ cups of all-purpose flour or use an all-purpose flour substitute.
- Reese's Pieces - 1¼ cup of Reese’s Pieces candy.
- Mini Chocolate Chips - ½ cup of mini chocolate chips or milk chocolate chips.
- Candy Eyeballs - 1 tablespoon of candy eyeballs. I like to use an assortment of sizes.
*Be sure to see the free printable recipe card below for ingredients, exact amounts & instructions with tips!*
🔪 How To Make Halloween Reese's Pieces Bars
These Halloween Reese's Pieces dessert bars are beginner-friendly and super easy to prepare! Take out your stand mixer, measuring cups, a 9x13 baking pan, parchment paper (or aluminum foil), and measuring spoons to begin.
One batch of these tasty dessert bars will make about 20 servings, depending on how large you cut them!
Prep & Make Cookie Dough
Step 1: Preheat and prep. Begin by preheating your oven to 350°F (175°C/Gas Mark 4). Next, prepare a 9x13-inch pan by lining it with parchment paper or aluminum foil, ensuring a slight overhang for easy removal.
Step 2: Cream ingredients. Cream ½ cup (114 grams) of butter and 2 cups (440 grams) of light brown sugar in a large mixing bowl or the bowl of a stand mixer. Next, add ½ cup (129 grams) of creamy peanut butter and mix until the ingredients are well incorporated.
Step 3: Mix and fold. Mix in 2 large eggs (100 grams) and 1 tablespoon (15 milliliters) of vanilla extract, blending thoroughly. Add ¾ teaspoon (4.5 grams) of salt and 1 teaspoon (4 grams) of baking soda, then gently fold in 2¼ cups (281 grams) of all-purpose flour, mixing just until incorporated.
Add Candy & Assemble
Step 4: Add candy. Gently combine 1¼ cup (260 grams) of Reeses’s Pieces candy and ½ cup (90 grams) of mini chocolate chips into the mixture. Use your hands to carefully blend, ensuring even distribution of the candies within the cookie dough.
Step 5: Assemble bars. Place the thoroughly mixed cookie dough into the previously prepared 9x13 pan. Utilize a spatula to spread and firmly press the dough into a uniform layer. Optionally, place extra candies on top (gently pressing them slightly into the dough).
Bake, Cool & Serve
Step 6: Bake bars. Position your 9x13 pan on the middle rack of your oven and bake at 350°F (175°C/Gas Mark 4) for 35-40 minutes, or until the top achieves a golden hue and loses its raw appearance. To determine doneness, insert a toothpick into the center – it should come out clean. *If required, shield the bars with aluminum foil to prevent excessive browning during the final minutes of baking.
🍽️ What To Serve With Halloween Reese's Pieces Bars
These peanut butter-filled dessert bars are tasty alone or alongside a tall glass of milk! You could pair them with my dirt cake cookies, Nutter Butter mummies, and meringue ghosts as a delicious dessert spread for your Halloween gatherings!
For more festive Halloween treats, check out my Halloween cookies, Halloween cakes, and Halloween cupcakes! Enjoy!
💭 Angela's Tips & Recipe Notes
- Feel free to use ½ cup of Reese’s Pieces peanut butter chips as a substitute for the entire amount of Reese's Pieces.
- For an added visual appeal, sprinkle some extra Reese's Pieces on top of the bars before placing them in the oven!
- You also can include some chopped mini Reese's Peanut Butter Cups, if desired!
- Monitor the baking time closely! It's best for these bars to be slightly undercooked, as they will continue to bake in the pan as they cool.
🥡 Storing
Keep your Halloween Reese's Pieces bars in an airtight storage container on the counter (at room temperature) for up to 7 days. You can refrigerate these bars if preferred; note that the texture may change.
Freezing Halloween Reese's Pieces Bars
Wrap each bar individually with plastic wrap and put them into a freezer-friendly storage bag. If you prefer, you can first flash-freeze these dessert bars on a baking sheet.
Store any leftover bars in your freezer for up to 3 months. When ready to enjoy, take them out of the freezer and thaw the bars at room temperature.
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❓ FAQ
Absolutely! If you don't have Reese's Pieces readily available, you can utilize a different type of candy like M&M's in the cookie dough. You could also use mini milk chocolate chips and add peanut butter baking chips if desired. Another idea would be to use mini Reese's Cups or mini Reese's Pieces!
Yes, Reese's Pieces bars will last in the freezer for up to 3 months when properly stored. I like to individually wrap each with plastic before transferring them to a resealable, heavy-duty plastic bag.
While I like to use regular creamy peanut butter, you could use other types of peanut butter, like crunchy peanut butter or natural peanut butter. However, remember that it could affect the overall texture and taste of the bars.
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📋 Recipe
Halloween Reese's Pieces Bars
Ingredients
- ½ cup butter (softened, at room temperature)
- 2 cups light brown sugar (packed)
- ½ cup creamy peanut butter
- 2 large eggs (at room temperature)
- 1 tablespoon vanilla extract
- 1 teaspoon baking soda
- ¾ teaspoon salt
- 2¼ cups all-purpose flour
- 1¼ cup Reeses’s Pieces candy
- ½ cup mini chocolate chips (or milk chocolate chips)
- 1 tablespoon candy eyeballs (I like to use an assortment of sizes)
Instructions
- Begin by preheating your oven to 350°F (175°C/Gas Mark 4). Next, prepare a 9x13 inch pan by lining it with parchment paper or aluminum foil, ensuring a slight overhang for easy removal.
- Cream ½ cup butter and 2 cups light brown sugar in a large mixing bowl or the bowl of a stand mixer. Next, add ½ cup creamy peanut butter and mix until the ingredients are well incorporated.½ cup butter, 2 cups light brown sugar, ½ cup creamy peanut butter
- Mix in 2 large eggs and 1 tablespoon vanilla extract, blending thoroughly. Add ¾ teaspoon salt and 1 teaspoon baking soda, then gently fold in 2¼ cups all-purpose flour, mixing just until incorporated.2 large eggs, 1 tablespoon vanilla extract, 1 teaspoon baking soda, ¾ teaspoon salt, 2¼ cups all-purpose flour
- Gently combine 1¼ cup Reeses’s Pieces candy and ½ cup mini chocolate chips into the mixture. Use your hands to carefully blend, ensuring even distribution of the candies within the cookie dough.1¼ cup Reeses’s Pieces candy, ½ cup mini chocolate chips
- Place the thoroughly mixed cookie dough into the previously prepared 9x13 pan. Utilize a spatula to spread and firmly press the dough into a uniform layer. Optionally, place extra candies on top (gently pressing them slightly into the dough).
- Position your 9x13 pan on the middle rack of your oven and bake at 350°F (175°C/Gas Mark 4) for 35-40 minutes, or until the top achieves a golden hue and loses its raw appearance. To determine doneness, insert a toothpick into the center – it should come out clean. *If required, shield the bars with aluminum foil to prevent excessive browning during the final minutes of baking.
- Remove from oven and press the 1 tablespoon candy eyeballs into the top of the Reese’s bars.1 tablespoon candy eyeballs
- Allow the cookie bars to cool completely before removing from the pan, then cut into squares to serve.
Equipment You May Need
Notes
- Feel free to use ½ cup of Reese’s Pieces peanut butter chips as a substitute for the entire amount of Reese's Pieces.
- For an added visual appeal, sprinkle some extra Reese's Pieces on top of the bars before placing them in the oven!
- You also can include some chopped mini Reese's Peanut Butter Cups, if desired!
- Monitor the baking time closely! It's best for these bars to be slightly undercooked, as they will continue to bake in the pan as they cool.
- To store: Keep your Halloween Reese's Pieces bars in an airtight container at room temperature for around one week.
- To freeze: Wrap each bar individually with plastic wrap and then put them into a freezer-friendly storage bag. If you prefer, you can first flash-freeze the bars on a baking sheet. Store the bars in the freezer for a duration of up to 3 months. When ready to enjoy, allow them to thaw at room temperature.
Nutrition
Angela is an at home chef that developed a passion for all things cooking and baking at a young age in her Grandma's kitchen. After many years in the food service industry, she now enjoys sharing all of her family favorite recipes and creating tasty dinner and amazing dessert recipes here at Bake It With Love!
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