Monster Cookie Bars

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.

Author: Sloane’s Table

Meal Type: Tree Nuts Free

Cuisine: American

Difficulty: MEDIUM

Prep. Time: 30 minutes

Cook Time: 22 minutes

Total Time: 52 minutes

Servings: 16 portions

Calories: 223 kcal per serving

Ingredients

160 grams - all-purpose flour
1 tsp - cornstarch
½ tsp - baking powder
½ tsp - baking soda
½ tsp - kosher salt
113 grams - unsalted butter
135 grams - peanut butter
160 grams - dark brown sugar
50 grams - granulated sugar
1 - egg
1 - egg yolk
1 tsp - vanilla extract
68 grams - old fashioned rolled oats
100 grams - Reese's pieces
85 grams - chocolate chips
candy eyes

Instructions

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

Nutrition