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Oatmeal Chocolate Chip Walnut Cookies Recipe

Published: Apr 9, 2026 by Kimmy · This post may contain affiliate links · Leave a Comment

Jump to Recipe· 3.8 from 8 reviews

 

If you have a soft spot for cookies that are chewy, comforting, and packed with delightful textures, then you will absolutely fall in love with this Oatmeal Chocolate Chip Walnut Cookies Recipe. Picture golden-baked morsels studded with rich chocolate chips and crunchy walnut pieces, all brought together by wholesome oat flour and a perfect balance of sweetness. These cookies are a heartwarming treat that feel homemade and special with every bite, making them a go-to recipe for any occasion where you want to share a little sweetness and a whole lot of love.

Ingredients You'll Need

The image shows eight different measuring cups and a small bowl arranged on a white marbled surface. Starting from the top left, there is a dark bottle, next to it is a red measuring cup filled with brown sugar. To the right is another red measuring cup filled with chocolate chips, and next to it is a purple measuring cup filled with white granulated sugar. Below, there is an orange measuring cup with white liquid, likely milk, beside a yellow measuring cup with a golden liquid, probably oil. To the left, a red measuring cup holds walnut halves, and next to it is a shiny metal measuring cup piled high with flour. Finally, there is a small white bowl with some white powder, possibly baking soda or salt. The scene is well lit and captured clearly. photo taken with an iphone --ar 4:5 --v 7

Gathering the right ingredients for these cookies is simple but essential. Each element plays a unique role in delivering that tender, chewy texture and rich flavor we crave in a perfect cookie.

  • 2 cups oat flour: The star of the recipe that gives the cookies a hearty texture and nutty flavor while keeping things wholesome.
  • 1 teaspoon baking soda: Helps the cookies rise just enough to be soft and light without losing that chewy center.
  • ½ teaspoon salt: Balances the sweetness and enhances all the flavors beautifully.
  • ½ cup brown sugar (packed): Adds moisture and a rich, caramel-like taste that complements the oats perfectly.
  • ½ cup granulated sugar: For a touch of sweetness and to help create the perfect cookie texture.
  • ¼ cup olive oil: A healthier fat option that keeps these cookies tender and adds subtle depth.
  • ⅓ cup milk: Moistens the dough just right to hold everything together.
  • 1 teaspoon vanilla extract: Enhances the overall aroma and flavor with its warm, sweet notes.
  • ½ cup chocolate chips: Melty, gooey pockets of chocolate that make every bite a delight.
  • ⅓ cup walnuts (chopped): Adds a satisfying crunch and a hint of earthy nuttiness.
  • Optional topping: flaky sea salt: A sprinkle of this brightens the sweetness and creates that irresistible sweet-salty contrast.

How to Make Oatmeal Chocolate Chip Walnut Cookies Recipe

Step 1: Prepare Your Oven and Baking Sheet

Start by preheating your oven to 375℉ and lining a large rimmed baking sheet with parchment paper. This simple prep helps ensure your cookies bake evenly and don’t stick, meaning perfect clean-up and perfect cookies every time.

Step 2: Mix the Dry Ingredients

In a large bowl, whisk together the sifted oat flour, baking soda, and salt. This step is important to distribute the leavening agent and salt evenly throughout the dough, guaranteeing consistent flavor and texture from the first cookie to the last.

Step 3: Combine Sugars and Wet Ingredients

Next, whisk in the brown sugar and granulated sugar with the dry mixture, making sure it’s well incorporated. Then add the olive oil, milk, and vanilla extract, stirring until the dough forms a uniform consistency that’s slightly thick but easy to handle.

Step 4: Fold in Chocolate Chips and Walnuts

Gently fold in the chocolate chips and chopped walnuts. This step can get a little hands-on to evenly distribute these delicious mix-ins throughout the dough, ensuring every bite pops with chocolatey and nutty goodness.

Step 5: Chill the Dough

Pop the dough into the fridge for 30 minutes. This chill time helps the cookies keep their shape when baking and deepens the flavors, making your Oatmeal Chocolate Chip Walnut Cookies Recipe even more irresistible.

Step 6: Shape and Bake the Cookies

Once chilled, form the dough into balls about 2 tablespoons each and place them spaced apart on your prepared baking sheet. Bake for 8 to 9 minutes until the edges are just golden. Remove from the oven and let the cookies set on the tray for 10 minutes before transferring to a cooling rack—this ensures they finish baking perfectly and hold their shape.

Step 7: Add Optional Finishing Touch

If you’re feeling fancy, sprinkle flaky sea salt over the warm cookies. This simple addition elevates the sweet and nutty flavors and delivers that magical sweet-salty balance that takes these cookies over the top.

How to Serve Oatmeal Chocolate Chip Walnut Cookies Recipe

This image shows a baking tray lined with light brown parchment paper, holding 15 evenly spaced raw cookie dough balls arranged in a 3 by 5 grid. Each dough ball is textured and light beige to tan in color with many dark brown to black chocolate chips mixed and scattered on their surfaces. The dough balls look thick and slightly rounded, with small chunks visible inside. The background beneath the tray is a white marbled texture. Photo taken with an iphone --ar 4:5 --v 7

Garnishes

While these cookies are beautiful on their own, a light dusting of powdered sugar or an extra sprinkle of flaky sea salt can add an elegant finishing touch. You can also drizzle some melted dark chocolate over the top for a stunning presentation that’s perfect for sharing.

Side Dishes

Enjoy these cookies alongside a tall glass of cold milk, a warm cup of coffee, or a soothing herbal tea. The creamy or bitter notes from your beverage accentuate the cookies' sweetness, making every pairing feel like a cozy indulgence perfect for any time of day.

Creative Ways to Present

For parties, stack the cookies on a rustic wooden board with little bowls of nuts and extra chocolate chips nearby for guests to add. Or sandwich them with vanilla ice cream for a homemade ice cream cookie treat that’s sure to be a crowd-pleaser during warm weather.

Make Ahead and Storage

Storing Leftovers

Store your Oatmeal Chocolate Chip Walnut Cookies in an airtight container at room temperature for up to five days. This keeps them soft and chewy, ready to enjoy whenever a cookie craving strikes without losing any flavor or texture.

Freezing

If you want to save some cookies for later, freeze them in a sealed freezer-safe bag or container. Properly stored, they’ll keep their deliciousness for up to three months. Just make sure to separate layers with parchment paper to prevent sticking.

Reheating

When you’re ready to enjoy frozen cookies, simply thaw them at room temperature or warm them briefly in the oven at 300℉ for 5 to 7 minutes to bring back that freshly-baked magic. You’ll get warm, gooey chocolate chips and soft cookies like they just came out of the oven.

FAQs

Can I substitute oat flour with regular flour?

While oat flour gives these cookies their unique texture and heartiness, you can use all-purpose flour if needed, but the cookies might lose some of their characteristic chew and nuttiness. For best results, stick to oat flour.

Are these cookies gluten-free?

Oat flour itself is naturally gluten-free, but it’s important to use certified gluten-free oat flour if you need the cookies to be gluten-free, as cross-contamination can occur during processing.

Can I use other nuts instead of walnuts?

Absolutely! Pecans, almonds, or even hazelnuts work wonderfully and add their own special crunch and flavor. Just chop them to a similar size as walnuts for consistent texture.

What makes these cookies chewy and not cakey?

The combination of oat flour, balanced fats from olive oil, and the correct ratio of wet to dry ingredients keeps these cookies tender but chewy rather than fluffy or cakey, which is exactly what makes this Oatmeal Chocolate Chip Walnut Cookies Recipe so satisfying.

Can I double the recipe for a larger batch?

Yes, this recipe scales up beautifully. Just double the ingredients and bake in batches, ensuring cookies have enough space to spread. The results will be just as delicious!

Final Thoughts

This Oatmeal Chocolate Chip Walnut Cookies Recipe has quickly become a favorite of mine to share with friends and family because it hits all the right notes: chewy, sweet, rich, and totally satisfying. Whether you’re baking for a crowd or just treating yourself, these cookies deliver comfort and joy in every bite. I can’t wait for you to try them and make them a part of your cookie rotation!

 

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Oatmeal Chocolate Chip Walnut Cookies Recipe

Oatmeal Chocolate Chip Walnut Cookies Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 3.8 from 8 reviews
  • Author: Kimmy
  • Prep Time: 15 minutes
  • Cook Time: 9 minutes
  • Total Time: 1 hour 13 minutes
  • Yield: 30 cookies
  • Category: Dessert
  • Method: Baking
  • Cuisine: American
  • Diet: Gluten Free
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Description

These Oatmeal Chocolate Chip Walnut Cookies offer a delightful combination of chewy oat flour, sweet chocolate chips, and crunchy walnuts. Featuring natural ingredients like olive oil and packed with the wholesome flavor of oats, these cookies provide a deliciously satisfying treat perfect for any occasion. The addition of flaky sea salt on top adds a gourmet touch, balancing sweetness with a hint of savory goodness.


Ingredients

Dry Ingredients

  • 2 cups oat flour (sifted)
  • 1 tsp baking soda
  • ½ tsp salt
  • ½ cup brown sugar (packed)
  • ½ cup granulated sugar

Wet Ingredients

  • ¼ cup olive oil
  • ⅓ cup milk
  • 1 tsp vanilla extract

Add-ins

  • ½ cup chocolate chips
  • ⅓ cup walnuts (chopped)

Optional Topping

  • Flaky sea salt


Instructions

  1. Preheat Oven: Preheat your oven to 375°F (190°C). Prepare a large rimmed baking sheet by lining it with parchment paper to prevent sticking and ensure even baking.
  2. Mix Dry Ingredients: In a large bowl, whisk together the sifted oat flour, baking soda, and salt to evenly distribute the leavening and salt throughout the flour.
  3. Add Sugars: Whisk in both the brown sugar and granulated sugar until combined, ensuring the sugars are well incorporated with the dry ingredients.
  4. Incorporate Wet Ingredients: Add olive oil, milk, and vanilla extract to the sugar and flour mixture. Mix thoroughly until a homogeneous dough forms.
  5. Fold in Add-ins: Gently fold in the chocolate chips and chopped walnuts. Use your hands if needed to evenly distribute them throughout the dough.
  6. Chill Dough: Cover the dough and chill it in the refrigerator for 30 minutes. This helps firm up the dough and prevents excessive spreading during baking.
  7. Form Cookies: Using about 2 tablespoons of dough per cookie, form balls and space them out on the prepared baking sheet, leaving room for spreading.
  8. Bake: Bake the cookies in the preheated oven for 8-9 minutes until the edges are set and lightly golden.
  9. Cool and Finish: Remove the cookies from the oven and allow them to set on the baking sheet for 10 minutes. Then transfer to a cooling rack. Optionally, sprinkle flaky sea salt on top while still warm to enhance flavor.

Notes

  • Chilling the dough is important to prevent the cookies from spreading too much while baking.
  • Using oat flour makes these cookies gluten-free only if certified gluten-free oats are used.
  • Substitute milk with a plant-based alternative to make the recipe dairy-free.
  • For a crunchier cookie, toast the walnuts lightly before adding them.
  • Store baked cookies in an airtight container at room temperature for up to one week or freeze for longer storage.

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