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Oatmeal Peanut Butter Jar Cookies

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Bree HesterBy Bree Hester
Bree Hester
Bree Hester Founder of Baked Bree

Bree Hester is the recipe developer, writer and food photographer behind Baked Bree. She started Baked Bree in February 2010 as a love letter to anyone that has ever come to her house for a meal. O…

Expertise: Recipe developer, food photographer and writer View all posts →
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An oatmeal cookie with peanuts and Reese’s peanut butter cups? Okay, I’m in. Make a few jars for hostess gifts or just to have around for last-minute gifts.

Oatmeal cookies with white chocolate chips and wrapped candies in a jar with a holiday ribbon.

I am sitting here on my couch, enjoying the peace and quiet. My children are at school, the kitchen is clean, and the laundry is well, it is still there. I am watching Regis and Kelly and tearing up at the tribute to all of Regis’s guests that have passed on. How did I not know that half of these people were dead?

How are we on week 8 of 12 weeks of Christmas already? I am so not ready for the holidays yet. I have not even begun to think about Christmas. I just realized yesterday that Thanksgiving is on Thursday. I was at the grocery store and it suddenly dawned on me that I needed to order a turkey and get my act together. I make the same things year after year, so making this meal is not hard, and I know how to do it so that it is completely manageable. But that doesn’t mean that it doesn’t take effort. Are you ready for Thanksgiving?

Last year, I posted a cookie jar recipe for Toffee Blondies, I had no idea that it would be so popular. Not only is the presentation adorable, but the blondies are delicious. This year is no different. An oatmeal cookie with peanuts and Reese’s peanut butter cups? Okay, I’m in. Make a few jars for hostess gifts or just to have around for last-minute gifts.

Assorted baking ingredients including flour, sugar, eggs, baking soda, and nuts on a kitchen table.

Oatmeal Peanut Butter Jar Cookies Ingredients

for the jar:

  • 1-quart mason jar
  • 1 1/4 cup rolled oats
  • 3/4 cup flour
  • 1/2 cup brown sugar
  • 1/4 cup sugar
  • 1/2 teaspoon baking powder
  • 1/8 teaspoon baking soda
  • 1/2 cup chopped dry roasted peanuts
  • 1 cup mini Reese’s peanut butter cups

to bake the cookies:

  • 1/2 cup creamy peanut butter
  • 1/4 cup butter at room temperature
  • 2 eggs
  • 1 teaspoon vanilla
Oatmeal peanut butter cookies in a glass jar with a handwritten recipe card.

How to Make – The Steps

Step 1: Layer the ingredients into the jar in the order listed: oats, flour, brown sugar, sugar, baking powder, baking soda, peanuts, and peanut butter cups. It is not necessary by any means, but it is helpful to have a canning funnel to get the ingredients into the jar. It makes far less mess. I take a spoon and spread the layer out to get even-ish lines on the jar.

Step 2: Wrap and give as a gift with the recipe and instructions included.

Step 3: To make the cookies, cream together butter and peanut butter. Add the eggs and vanilla.

Step 4: Take the peanut butter cups out of the jar. Peel off the wrappers and cut them in half. Set aside. Pour in the remaining contents of the jar. Mix until combined.

Golden cookie dough portions on parchment paper ready for baking.

Step 5: Add the peanut butter cups and mix again.

Step 6: Using an ice cream scoop, scoop the dough onto a parchment-lined baking sheet.

Step 7: Bake in a preheated 350-degree oven for 12 to 14 minutes. Let cool for one minute and then transfer to a cooling rack to cool completely. Recipe from bhg.com

Butterscotch cookies with peanut candies and wrapped chocolates on rustic wooden surface, baked goods for holiday treat.

Oatmeal Peanut Butter Jar Cookies

Bree Hester
No ratings yet
Print Recipe Pin Recipe
Prep Time 20 minutes mins
Cook Time 15 minutes mins
Total Time 35 minutes mins
Course cookies, Dessert
Cuisine American
Servings 24
Calories 132 kcal

Ingredients
Ā Ā 

for the jar:

  • 1 quart mason jar
  • 1 1/4 cup rolled oats
  • 3/4 cup flour
  • 1/2 cup brown sugar
  • 1/4 cup sugar
  • 1/2 teaspoon baking powder
  • 1/8 teaspoon baking soda
  • 1/2 cup chopped dry roasted peanuts
  • 1 cup mini Reese’s peanut butter cups

to bake the cookies:

  • 1/2 cup creamy peanut butter
  • 1/4 cup butter at room temperature
  • 2 eggs
  • 1 teaspoon vanilla

Instructions
Ā 

  • Layer the ingredients into the jar in the order listed: oats, flour, brown sugar, sugar, baking powder, baking soda, peanuts, and peanut butter cups. It is not necessary by any means, but it is helpful to have a canning funnel to get the ingredients into the jar. It makes far less mess. I take a spoon and spread the layer out to get even-ish lines on the jar.
    Fine mesh sieve atop a glass jar for baking or cooking preparation, on a white plate with snack packages nearby.
  • Wrap and give as a gift with the recipe and instructions included.
    Oatmeal peanut butter cookies in a glass jar with a handwritten recipe card.
  • To make the cookies, cream together butter and peanut butter. Add the eggs and vanilla.
    Creamy cookie dough being mixed in a stand mixer for baking recipes.
  • Take the peanut butter cups out of the jar. Peel off the wrappers and cut them in half. Set aside. Pour in the remaining contents of the jar. Mix until combined.
    Smooth cookie dough mixed in stand mixer, baking ingredients, dessert batter preparation, Baked Bree recipe.
  • Add the peanut butter cups and mix again.
    Creamy cookie dough mixture with mixing tools in a stainless steel bowl, ready for baking.
  • Using an ice cream scoop, scoop the dough onto a parchment-lined baking sheet.
    Golden cookie dough portions on parchment paper ready for baking.
  • Bake in a preheated 350-degree oven for 12 to 14 minutes. Let cool for one minute and then transfer to a cooling rack to cool completely. Recipe from bhg.com
    Soft oatmeal cookies with peanut candies and Reese's mini cups on parchment paper.

Nutrition

Calories: 132kcalCarbohydrates: 15gProtein: 4gFat: 7gSaturated Fat: 2gSodium: 75mgFiber: 1g
Keyword Oatmeal Peanut Butter Jar Cookies
Tried this recipe?Let us know how it was!

About Bree Hester

Bree Hester is the recipe developer, writer and food photographer behind Baked Bree. She started Baked Bree in February 2010 as a love letter to anyone that has ever come to her house for a meal. Over the years it has evolved into so much more than that. While Bree may have hung up her apron for the last time, the reins have now been passed over to a passionate team of foodies.

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Published: Oct 16, 2023 | Updated: Feb 2, 2026

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