• VE

These monster cookie bars are the perfect shareable Halloween dessert, but made with classic flavors that you want to enjoy all year round! Made with a simple peanut butter cookie dough loaded with oats, Reese's pieces, and chocolate chips, these cookie bars are sure to hit with everyone.

Monster Cookie Bars
Monster Cookie Bars
Monster Cookie Bars
Monster Cookie Bars
Monster Cookie Bars
Monster Cookie Bars cover
From the Cook
From the Cook
From the Cook
From the Cook
From the Cook
1/6

Ingredients

0 allergens identified

Monster Cookie Bars

Instructions

1
Preheat the oven to 350 degrees F and line a 9" square pan with parchment paper.
2
In a medium bowl, whisk together the flour, cornstarch, baking powder, baking soda, and salt. Set aside.
3
In the bowl of a stand mixer fitted with a paddle attachment, cream together the butter and peanut butter on medium speed for 2-3 minutes.
4
Add the sugars and continue beating for 2-3 more minutes until light & fluffy.
5
Beat in the egg, egg yolk, and vanilla until fully combined.
6
Add the dry ingredients and mix on low speed until just combined.
7
Lastly, fold in the oats, Reese's pieces, and chocolate chips with a rubber spatula.
8
Press the dough into the pan and top with more Reese's pieces and chocolate chips.
9
Bake the monster cookie bars for about 22 minutes or until evenly golden. Allow to cool completely in the pan before removing.
10
Cut into 16 squares, top with candy eyes, and enjoy!

Nutrition

My Calorie Intake

Review & Earn

Be the first to review this recipe and earn a 20% Bonus

Level up & unlock free Premium by reviewing recipes!

My Notes

Your kitchen notebook is waiting.

Whether it's a recipe tweak or an inspiration burst — jot it down here.

About the Cook

Sloane’s Table banner
Sloane’s Table

@sloanes-table

297
Recipes
2
Saves

More Recipes From Sloane’s Table

From the creator of this recipe

View all 297
Matcha Amaretti Cookies
Sloane’s Table
Dessert

Matcha Amaretti Cookies

Sloane’s Table
Master Pastry Cream Filling Recipe
Sloane’s Table
Other

Master Pastry Cream Filling Recipe

Sloane’s Table
Sicilian Pistachio Ice Cream
Sloane’s Table
Dessert

Sicilian Pistachio Ice Cream

Sloane’s Table
Small Batch Banana Carrot Muffins
Sloane’s Table
Breakfast

Small Batch Banana Carrot Muffins

Sloane’s Table
Crème Brûlée Filled Brioche Donuts
Sloane’s Table
Dessert

Crème Brûlée Filled Brioche Donuts

Sloane’s Table
Recipes Icon

Complete The Meal! 🔎

Quick Explore Recipes by Category

See All

No Recipes Available

Recommended Recipes for you

Tailored to your preferences

View all
Green Vanilla Crinkle Cookies
Cake Mix Recipes
Dessert

Green Vanilla Crinkle Cookies

Cake Mix Recipes
Hot Cocoa Chocolate Cake Dump Cake
Cake Mix Recipes
Dessert

Hot Cocoa Chocolate Cake Dump Cake

Cake Mix Recipes
No Bake Cherry Cheesecake
It is a Keeper
Dessert

No Bake Cherry Cheesecake

It is a Keeper
Blueberry-Almond Skillet Cake
Sunday Table
Dessert

Blueberry-Almond Skillet Cake

Sunday Table
Strawberry Brownies
Food with Feeling
Dessert

Strawberry Brownies

Food with Feeling
Mini Key Lime Cheesecake
It is a Keeper
Dessert

Mini Key Lime Cheesecake

It is a Keeper
Hot Cocoa Cookies Recipe
Cake Mix Recipes
Dessert

Hot Cocoa Cookies Recipe

Cake Mix Recipes
Kolaczki (Polish Kolacky Cookies)
It is a Keeper
Dessert

Kolaczki (Polish Kolacky Cookies)

It is a Keeper
Matcha Amaretti Cookies
Sloane’s Table
Dessert

Matcha Amaretti Cookies

Sloane’s Table
Frozen Gingersnap Pumpkin Pie
OnlineCook
Dessert

Frozen Gingersnap Pumpkin Pie

OnlineCook