If you love the combination of peanut butter and chocolate, these Reese’s Pieces Chocolate Chip Cookie Bars are about to become your new favorite dessert. They’re thick, chewy, buttery, and packed with melty chocolate chips and crunchy candy pieces.
Why You’ll Love These Cookie Bars
These cookie bars are:
- Easier than making individual cookies (no scooping)
- Thick, soft, and bakery-style
- Loaded with peanut butter flavor
- Perfect for parties, bake sales, or quick desserts
They have a chewy center with slightly crisp edges, giving you the perfect texture in every bite.
Preparation Time
- Prep Time: 15 minutes
- Bake Time: 25–30 minutes
- Cooling Time: 30 minutes
- Total Time: about 1 hour 15 minutes
Ingredients
Dry Ingredients:
- 2 1/4 cups all-purpose flour
- 1 teaspoon baking soda
- 1/2 teaspoon salt
Wet Ingredients:
- 3/4 cup unsalted butter, melted
- 1/2 cup granulated sugar
- 1 cup brown sugar (packed)
- 2 large eggs
- 2 teaspoons vanilla extract
- 1/2 cup creamy peanut butter
Mix-ins:
- 1 cup chocolate chips
- 1 cup Reese’s Pieces candies
How to Make Reese’s Pieces Cookie Bars
Step 1: Prepare Your Pan
Preheat your oven to 180°C (350°F).
Line a 9×13-inch baking pan with parchment paper or lightly grease it.
Step 2: Mix Dry Ingredients
In a medium bowl:
- Whisk together flour, baking soda, and salt
Set aside.
Step 3: Combine Wet Ingredients
In a large bowl:
- Mix melted butter, brown sugar, and granulated sugar until smooth
Add:
- Eggs (one at a time)
- Vanilla extract
- Peanut butter
Mix until fully combined and creamy.
Step 4: Bring It Together
Gradually add the dry ingredients into the wet mixture.
Stir until just combined. Do not overmix.
Step 5: Add the Mix-ins
Fold in:
- Chocolate chips
- Reese’s Pieces
The dough will be thick.
Step 6: Bake
- Spread the dough evenly into your prepared pan
- Press extra candies on top if desired
Bake for 25–30 minutes, or until:
- The edges are golden
- The center is slightly soft
Step 7: Cool and Slice
Let the bars cool completely before slicing into squares.
Tips for Perfect Cookie Bars
- Do not overbake; a slightly soft center gives a chewy texture
- Use room temperature eggs for better mixing
- Add extra Reese’s Pieces on top before baking for better presentation
- Chill the dough for 20 minutes if you prefer thicker bars
Variations
- Swap peanut butter for almond butter
- Add crushed cookies or pretzels for extra texture
- Use white chocolate chips instead of regular
- Drizzle melted chocolate on top after baking
Storage Tips
- Store in an airtight container at room temperature for up to 4 days
- Refrigerate for up to 1 week
- Freeze for up to 2 months
Calories (Approximate)
- Per bar (based on 24 bars): 280–320 calories
Final Thoughts
These Reese’s Pieces Chocolate Chip Cookie Bars are rich, chewy, and easy to make. They are a great option when you want a crowd-pleasing dessert without the effort of making individual cookies.