Peanut Butter Oatmeal Cookies

Featured in: Baking & Sweet Treats

These chewy peanut butter oatmeal cookies combine nutty richness with the hearty texture of oats, making them perfect for dessert or a satisfying snack. Simple to prepare, they deliver a tender bite with golden edges and a soft center. Customize with chocolate chips or chopped peanuts, and enjoy warm from the oven or after they cool. Ideal for gatherings, lunchboxes, or treating yourself with a glass of cold milk or coffee. The recipe is vegetarian and easy enough for bakers of all skill levels.

Updated on Sat, 04 Oct 2025 13:43:44 GMT
Freshly baked peanut butter oatmeal cookies cooling on a wire rack, golden and chewy. Save
Freshly baked peanut butter oatmeal cookies cooling on a wire rack, golden and chewy. | bakozy.com

Chewy, nutty peanut butter oatmeal cookies are my go-to when I want something nostalgic and snackable. With oats for substance and peanut butter for creamy richness, these cookies come together quickly for everything from lunchbox treats to late-night desserts.

I discovered this recipe on a rainy Saturday and by Sunday, my kitchen smelled like fresh-baked happiness. Now I make these weekly for my cookie-loving crew and they never last long.

Ingredients

  • All-purpose flour: Gives the cookies structure and helps them hold their shape during baking. Choose unbleached flour for a richer flavor
  • Old-fashioned rolled oats: Add heartiness and chewy texture. Look for thick-cut oats for best results
  • Baking soda and baking powder: Give the cookies a gentle lift. Make sure yours are fresh for consistent rise
  • Salt: Balances the sweetness and enhances the peanut butter flavor. Use fine sea salt if you have it
  • Unsalted butter: Adds richness and keeps the cookies moist. Opt for European-style butter for deeper flavor if possible
  • Creamy peanut butter: Infuses every bite with nutty depth. Choose a natural brand with minimal added sugar for best results
  • Light brown sugar: Adds moisture and a slight caramel undertone. Packed tightly for consistent sweetness
  • Granulated sugar: Contributes a crisp edge and helps with even browning
  • Large eggs: Bind the dough and contribute to chewiness. Fresh eggs work best for the softest texture
  • Pure vanilla extract: Gives these cookies a warm bakery aroma. Use real vanilla for the best experience
  • Optional chocolate chips or chopped peanuts: Bring extra indulgence or crunch. Select high-quality chocolate or dry-roasted nuts to suit your taste

Instructions

Preheat and Line Pans:
Set the oven to three hundred fifty degrees Fahrenheit. Place parchment paper on two baking sheets so cookies release easily and cleanup is a breeze
Mix the Dry Ingredients:
In a medium bowl combine flour oats baking soda baking powder and salt. Stir thoroughly to evenly distribute the leaveners and salt throughout the flour and oats
Cream the Butter and Sugars:
Add softened unsalted butter peanut butter light brown sugar and granulated sugar to a large mixing bowl. Beat with an electric mixer or sturdy whisk for about two minutes until creamy smooth and slightly lighter in color. This step ensures maximum chewiness and creaminess
Add the Eggs and Vanilla:
Mix in the eggs one at a time beating until each egg is fully incorporated before adding the next. Pour in the vanilla extract and blend again until the mixture looks uniform and glossy
Combine Wet and Dry Mixtures:
Gradually add the dry ingredient mixture into the wet ingredients mixing gently just until you see no streaks of flour. Overmixing can make cookies tough so stop as soon as ingredients are combined
Fold in Add-ins:
Pour in chocolate chips or chopped peanuts if using then fold gently with a spatula or spoon. This keeps the mix-ins evenly distributed but the dough soft
Portion and Shape Dough:
Scoop tablespoon-sized balls of dough onto the parchment-lined sheets and space them two inches apart to allow room for spreading. Gently flatten each ball with a fork in a crisscross pattern for that classic peanut butter cookie look
Bake and Watch Closely:
Place sheets in the oven and bake for ten to twelve minutes. The edges should turn golden brown while the centers look slightly soft for ultimate chewiness
Cool and Finish:
Let the cookies rest on the baking sheet for five minutes to set the structure then transfer to a wire rack to cool completely. This prevents breakage and delivers cookies with perfect texture
Close-up of homemade peanut butter oatmeal cookies with a soft center and crisp edges. Save
Close-up of homemade peanut butter oatmeal cookies with a soft center and crisp edges. | bakozy.com

My favorite part is stirring in crunchy peanuts for extra texture—sometimes my little one helps and sneaks a few peanuts straight from the bowl. When we pull a tray of these cookies from the oven it always fills the kitchen with laughter and irresistible nutty aromas.

Storage Tips

Once cooled store the cookies in an airtight container at room temperature for up to four days. If you like them extra soft add a slice of bread to the container to maintain chewiness. For longer storage wrap and freeze for up to three months—simply thaw at room temperature when you crave a treat

Ingredient Substitutions

For peanut allergies try sunflower seed butter or almond butter as a swap. Use gluten-free all-purpose flour blend for a version that works for sensitive eaters. Add raisins dried cranberries or white chocolate chips to switch up the flavor profile without changing texture

Serving Suggestions

Serve these cookies with a tall glass of cold milk or your favorite non-dairy alternative. Stack them in lunchboxes for afternoon snacks or sandwich a scoop of vanilla ice cream between two for the ultimate summer dessert. They also make great party platters or edible gifts

Cultural and Historical Context

Peanut butter cookies are a classic American favorite that date back to the early twentieth century especially popularized during the Great Depression. The addition of oats makes this version heartier which was a common home-baker strategy to stretch ingredients and add nutrition. That classic crisscross marks the cookies as peanut butter specials—a tradition that started as both decoration and a way to help the dough bake evenly

Seasonal Adaptations

Add a pinch of cinnamon or nutmeg in the fall for a cozy twist. Swap in chopped dried cherries or cranberries in winter for festive flavor. Toss chopped peanuts or toasted coconut for a spring or summer crunch

Success Stories

This recipe has turned cookie skeptics into repeat snackers in my house. I have shared these at school bake sales and they always end up as the first empty tray on the table. Even friends who think they prefer traditional peanut butter cookies end up loving the chewy oat texture and nutty depth

Freezer Meal Conversion

Scoop dough balls onto a parchment-lined sheet and freeze until solid then store in a zip-top bag. You can bake them straight from the freezer by adding an extra two minutes to the bake time for fresh warm cookies any night

Peanut butter oatmeal cookies served with a glass of milk, ready for a cozy dessert. Save
Peanut butter oatmeal cookies served with a glass of milk, ready for a cozy dessert. | bakozy.com

These peanut butter oatmeal cookies are the perfect blend of nostalgic comfort and satisfying chewiness. Enjoy them with a glass of milk for a delightful snack any time of day.

Recipe FAQ

How do I achieve chewy cookies?

Underbake them slightly so the centers remain soft, letting the edges just turn golden for the best chewy texture.

Can I substitute almond butter?

Yes, almond butter works well and gives a different nutty flavor if you want to switch things up.

What extras can I add?

Try chocolate chips, chopped peanuts, a pinch of cinnamon, or a handful of raisins for variety and extra texture.

Are these suitable for vegetarians?

Yes, these cookies are vegetarian-friendly, using eggs and butter as part of the base ingredients.

How should I store the cookies?

Keep them in an airtight container at room temperature for up to one week to maintain freshness.

Can I make them gluten-free?

Swap in a 1:1 gluten-free flour blend and gluten-free oats to make these cookies gluten-free.

Peanut Butter Oatmeal Cookies

Chewy, nutty cookies with hearty oats and rich peanut butter, ideal for snacking or dessert any time.

Prep duration
15 min
Heat time
12 min
Complete duration
27 min
Created by Natalie Harris


Complexity Easy

Heritage American

Output 24 Portions

Nutrition specifications Meat-free

Components

Dry Ingredients

01 1 cup all-purpose flour
02 1 cup old-fashioned rolled oats
03 1/2 teaspoon baking soda
04 1/2 teaspoon baking powder
05 1/4 teaspoon salt

Wet Ingredients

01 1/2 cup unsalted butter, softened
02 1 cup creamy peanut butter
03 3/4 cup light brown sugar, packed
04 1/4 cup granulated sugar
05 2 large eggs
06 1 teaspoon pure vanilla extract

Optional Add-ins

01 1/2 cup chocolate chips or chopped peanuts

Directions

Phase 01

Preheat Oven and Prepare Baking Sheets: Preheat oven to 350 degrees Fahrenheit (175 degrees Celsius). Line two baking sheets with parchment paper.

Phase 02

Combine Dry Ingredients: In a medium bowl, whisk together flour, rolled oats, baking soda, baking powder, and salt.

Phase 03

Cream Wet Ingredients: In a large bowl, beat softened butter, creamy peanut butter, light brown sugar, and granulated sugar until the mixture is creamy and smooth, approximately 2 minutes.

Phase 04

Incorporate Eggs and Vanilla: Add the large eggs one at a time, ensuring each is well incorporated before adding the next. Mix in the pure vanilla extract.

Phase 05

Combine Wet and Dry Mixtures: Gradually incorporate the dry ingredients into the wet ingredients, mixing only until just combined. If using, gently fold in chocolate chips or chopped peanuts.

Phase 06

Portion Dough: Scoop tablespoon-sized portions of the dough onto the prepared baking sheets, ensuring they are spaced approximately 2 inches apart.

Phase 07

Shape Cookies: Gently flatten each dough ball with the tines of a fork, creating a distinctive crisscross pattern.

Phase 08

Bake Cookies: Bake for 10 to 12 minutes, or until the edges are golden brown and the centers appear slightly soft.

Phase 09

Cool Cookies: Allow the cookies to cool on the baking sheets for 5 minutes before transferring them to a wire rack to cool completely.

Tools needed

  • Mixing bowls
  • Electric mixer or whisk
  • Measuring cups and spoons
  • Baking sheets
  • Parchment paper
  • Cooling rack

Allergy details

Review each component for potential allergens and if uncertain, we recommend consulting with a healthcare provider.
  • Contains peanuts, eggs, gluten (from wheat), and dairy (from butter).
  • Always verify ingredient labels for potential cross-contamination if allergens are a concern.

Nutrient breakdown (per portion)

These values are estimates only and shouldn't replace professional medical guidance.
  • Energy: 140
  • Fats: 8 g
  • Carbohydrates: 15 g
  • Proteins: 3 g