As a child, I remember my mom making something similar to these cookie bars, but I didn’t have a full fledged recipe. So I pieced together two separate recipes, and the result was just like I remembered those yummy bar cookies.

oatmeal peanut butter chocolate cookie bars, Oatmeal Peanut Butter Chocolate Cookie Bars, Joyful Homemaking

It’s three layers: the bottom which is like a giant oatmeal peanut butter cookie, then a layer of chocolate, and it’s topped with homemade peanut butter frosting. Yum!

oatmeal peanut butter chocolate cookie bars, Oatmeal Peanut Butter Chocolate Cookie Bars, Joyful Homemaking

INGREDIENTS:

  • 1/2 cup butter (I use Smart Balance)
  • 1/2 cup sugar
  • 1/2 cup brown sugar
  • 1 egg
  • 1 teaspoon vanilla
  • 1/2 cup peanut butter
oatmeal peanut butter chocolate cookie bars, Oatmeal Peanut Butter Chocolate Cookie Bars, Joyful Homemaking

Mix together with mixer.

oatmeal peanut butter chocolate cookie bars, Oatmeal Peanut Butter Chocolate Cookie Bars, Joyful Homemaking
Then mix dry ingredients together:
  • 1 cup flour
  • 1/2 cup quick cook oats
  • 1 teaspoon baking soda
  • 1/4 teaspoon salt
oatmeal peanut butter chocolate cookie bars, Oatmeal Peanut Butter Chocolate Cookie Bars, Joyful Homemaking
oatmeal peanut butter chocolate cookie bars, Oatmeal Peanut Butter Chocolate Cookie Bars, Joyful Homemaking
 Combine wet and dry ingredients and spread in a 9×13 inch greased pan.

Bake at 350 degrees for 20 to 25 minutes.

oatmeal peanut butter chocolate cookie bars, Oatmeal Peanut Butter Chocolate Cookie Bars, Joyful Homemaking

When you take out of the oven, sprinkle 1 cup of chocolate chips over the top.

oatmeal peanut butter chocolate cookie bars, Oatmeal Peanut Butter Chocolate Cookie Bars, Joyful Homemaking

After they start to melt, spread them over the top with a spatula.

oatmeal peanut butter chocolate cookie bars, Oatmeal Peanut Butter Chocolate Cookie Bars, Joyful Homemaking
While this cools and the chocolate hardens up, make the peanut butter frosting.

Peanut Butter Frosting:

  • 1/2 cup plus 1 Tablespoon room temperature butter
  • 1 cup creamy peanut butter
  • 1/4 cup milk, add more if too thick
  • 2 cups powdered sugar

Beat peanut butter and butter with mixer, then gradually add powdered sugar and milk alternately.
Beat well, till it is fluffy. If it is too thick, try adding a dab more milk.

oatmeal peanut butter chocolate cookie bars, Oatmeal Peanut Butter Chocolate Cookie Bars, Joyful Homemaking

 Spread over the cooled chocolate layer. Let them sit for a few minutes at least so everything “sets” and then you are ready to cut into bars and serve.

 

oatmeal peanut butter chocolate cookie bars, Oatmeal Peanut Butter Chocolate Cookie Bars, Joyful Homemaking
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Oatmeal Peanut Butter Chocolate Cookie Bars

Course Dessert
Prep Time 20 minutes
Cook Time 25 minutes
Total Time 45 minutes
Servings 12
Author Joyful Homemaking

Ingredients

  • Wet ingredients:
  • 1/2 cup butter
  • 1/2 cup sugar
  • 1/2 cup brown sugar
  • 1 egg
  • 1 teaspoon vanilla
  • 1/2 cup peanut butter
  • Dry ingredients:
  • 1 cup flour
  • 1/2 cup quick cook oats
  • 1 teaspoon baking soda
  • 1/4 teaspoon salt
  • Middle:
  • 1 cup of chocolate chips
  • Frosting:
  • 1/2 cup plus 1 Tablespoon room temperature butter
  • 1 cup creamy peanut butter
  • 1/4 cup milk (plus more if too thick)
  • 2 cups powdered sugar

Instructions

  • It’s three layers: the bottom which is like a giant oatmeal peanut butter cookie, then a layer of chocolate, and it’s topped with homemade peanut butter frosting.
  • Mix wet ingredients together with mixer.
  • Then mix dry ingredients together.
  • Combine wet and dry ingredients and spread in a 9×13 inch greased pan.
  • Bake at 350 degrees for 20 to 25 minutes.
  • When you take out of the oven, sprinkle 1 cup of chocolate chips over the top.
  • After they start to melt, spread them over the top with a spatula.
  • While this cools and the chocolate hardens up, make the peanut butter frosting.
  • Beat peanut butter and butter with mixer, then gradually add powdered sugar and milk alternately.
  • Beat well, till it is fluffy. If it is too thick, try adding a dab more milk.
  • Spread over the cooled chocolate layer.
  • Let them sit for a few minutes at least so everything “sets” and then you are ready to cut into bars and serve.

oatmeal peanut butter chocolate cookie bars, Oatmeal Peanut Butter Chocolate Cookie Bars, Joyful Homemaking

9 Comments

  1. My husband may just fall in love with you for this! These are his favorite flavors all combined in one. Of course, I love these flavors too! But the real goal is sugaring up the hubs! Thanks for sharing!

  2. Hi Margo,
    These are awesome Bars, they look yummy! Hope you are having a great fall weekend and thank you so much for sharing with Full Plate Thursday.
    Come Back Soon!
    Miz Helen

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