Peanut Butter Smores Oatmeal Cookie Bars

5 from 2 votes

Reese's Peanut Butter S'mores Oatmeal Cookie Bars - total indulgence in each bite!

Course Dessert

Cuisine American

Keyword peanut butter s'mores oatmeal cookie bars

Prep Time 15

Cook Time 25

Chill Time 30

Total Time 1 10

Servings bars

Calories 328kcal

Author Trish - Mom On Timeout

Preheat oven to 350°F. Line a 9x13 inch baking dish with parchment paper and set aside.
Cream butter and sugar together in a large mixing bowl. Add peanut butter and continue mixing.
12 tablespoons butter, 2 cups light brown sugar, ½ cup creamy peanut butter
Add eggs one at a time, mixing well after each egg. Add in vanilla extract.
2 large eggs, 1 tablespoon vanilla extract
Combine flour, graham cracker crumbs, oats, cornstarch, baking powder, and salt in a small mixing bowl. Whisk to combine.
1 ½ cups all-purpose flour, ¾ cup graham cracker crumbs, 1 cup old fashioned oats, 1 tablespoon cornstarch, 2 ½ teaspoons baking powder, ½ teaspoon salt
Add the flour mixture to the butter mixture, slowly stirring until well combined.
Stir in the peanut butter chips.
1 cup Reese's peanut butter baking chips
Refrigerate cookie dough for at least 30 minutes.
Spread 2/3 of the dough on the bottom of the pan.
Top with Hershey's bars, breaking apart as needed.
7 full-size Hershey's chocolate bars
Spread marshmallow fluff on top of Hershey's bars.
7 ounces marshmallow fluff
Stir chopped Reese's into remaining cookie dough.
1 cup Reese's miniatures
Drop the remaining dough on top by the teaspoon. It doesn't have to be perfect and it won't cover all the marshmallow fluff.
Bake for 25-30 minutes. Let cool completely and then cut into bars.