Oatmeal Chocolate Chip Cookies

filed under: Chocolate Cookies on February 14, 2017

Oatmeal Chocolate Chip Cookies are a homestead staple! My kids call these “craving cookies”. They will say, “Mom, will you make me that one cookie? I am craving it!” We all know they mean these Oatmeal Chocolate Chip Cookies… the perfect combination of rich oatmeal cookie and delicious chocolate! I’m also sharing my 50 Best Cookie Recipes!

Simply the best Oatmeal cookie ever... grandma would be proud!

Oatmeal Chocolate Chip Cookies

There is an aspect to these cookies that I love… the “secret” ingredient. It was my grandma’s recipe and she always made the BEST cookies. When I found out I was a bit shocked… but they taste so good I quickly got over it. I had never heard of adding mayonnaise to a cookie dough before, but it makes sense when you think about it. A very basic mayo consists of egg, oil, and a bit of salt. Those are common ingredients in a cookie!

Simply the best Oatmeal cookie ever... grandma would be proud!

How to Bake the Best Cookie


Lots of cookie recipes contain brown sugar and there is a good reason for this. Recipes with brown sugar will absorb moisture after baking which helps to ensure that they stay chewy.

Have you ever noticed that the ratios of sugar in most cookie dough recipes are higher than other baked goods? That is because not all of the sugar dissolves during mixing, which is good! The dough will soften and spread while baking as more sugar dissolves ensuring the classic cookie shape and texture. If you happen to use less sugar than the recipe calls for your final cookie could puff up more and the texture could be less chewy.


Fats contribute not only to what a cookie tastes like but to whether the cookie keeps its shape or flattens as the fats are baked. The kind of fat you use also makes a difference. Most recipes call for butter or shortening, but this recipe has mayo. The mayo acts as the fat in this recipe and helps to create a crispy and chewy cookie.


In cookie recipes, the two most common leaveners are baking soda and baking powder. This recipe utilizes baking soda only. Baking soda is bicarbonate of soda. It neutralizes the acidity of certain ingredients in the dough, allowing the cookies to brown in the oven.


The main difference in flours found in the grocery store is the amount of protein they contain. All-purpose flour, or plain flour, is an all-around good flour to use for baking. All-purpose has a protein content of 10-13% and it consistently performs well. If you are looking for a softer, more delicate cookie you could substitute cake flour for all-purpose, but it might affect the structure of the cookie. When substituting flours it is best to use a scale, just be sure to sift flours prior to weighing. Most cookie recipes call for all-purpose flour. Bleached and unbleached flours are basically interchangeable in cookie recipes and unbleached flour is usually a better choice when you want a slightly chewier cookie.


Without a doubt, this is one ingredient I use in all my baking. Salt enhances flavor and without it, the cookie could just taste like a sugar overload. Without this flavor enhancer, the secondary flavors in a cookie fall flat as the sweetness takes over. Salt can also act as a protein strengthener, helping to achieve the perfect chewy cookie.

Once you have all the basics covered, creating the perfect cookie is easy no matter what the recipe.

These cookies are perfect for one big reason… they are an amazing “base” recipe. I have used them with quick oats, with regular oatmeal, with granulated sugar, butter instead of mayo, raisin’s instead of chocolate chips… you name it! And they always turn out perfectly.

4.67 from 3 votes
Simply the best Oatmeal cookie ever... grandma would be proud!
Oatmeal Chocolate Chip Cookies
Prep Time
15 mins
Cook Time
12 mins
Total Time
27 mins

My kids call these “craving cookies”. They will say, “Mom, will you make me that one cookie? I am craving it!” We all know they mean these Oatmeal Chocolate Chip Cookies… the perfect combination of rich oatmeal cookie and delicious chocolate!

Course: Dessert
Cuisine: American
Keyword: Oatmeal Chocolate Chip Cookies
Servings: 24 cookies
Author: Amanda Rettke
  • 1 1/2 cup firmly packed dark brown sugar
  • 3/4 cup mayo
  • 1 egg
  • 2 teaspoons vanilla extract
  • 3 cups quick-cooking oats
  • 1 cup all-purpose flour
  • 1 teaspoon ground cinnamon
  • 1/2 teaspoon baking soda
  • 1 cup semi-sweet chocolate chips
  1. Preheat oven to 350°.
  2. In a medium bowl beat brown sugar, mayo, egg, and vanilla for about 2 minutes. (You can use a hand-held mixer or stand mixer, but grandma recommends doing it by hand.) Set aside.

  3. In a large bowl, combine oats, flour, cinnamon, and baking soda.
  4. Slowly add the mayo mixture to the oat mixture and stir by hand until just combined.
  5. Stir in chocolate chips. (I save a few to place on top before baking) 

  6. On prepared baking sheets, drop dough by level tablespoonfuls, 3-inches apart. (they will spread some)

  7. Bake 8-10 minutes or until golden.
  8. Cool cookies on a wire rack.

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  • 2pots2cook says:

    We can never go wrong with these 🙂 Thank you so much !

  • Cindy Young says:

    Mayo? That’s crazy lol. I’m gong to try these. Any particular brand of mayo you recommend?

  • theresa says:

    There a little crumbly

  • Juliet says:

    Mayonnaise sounds interesting. I can’t wait to try it.

  • ALicia says:

    This is my first time to try in every of your recipes.
    My oat choco chip cookies turned out nothing like your photo, I followed your recipe exactly and the three cups of oats just sucked up the mayonnaise and I was left w a thick glob of flour sugar and oats. Cookies turned out overwhelmingly, cloyingsweet (like less than half a cup of sugar would’ve worked as the chips added some sweetness too). I mixed exact proportion and was left w a thick dense bowl of ingredients that didn’t flatten while baking. They also needed about 15 mins of baking time, not 8-10. I’m not a novice cook or baker but wanted to share honest feedback as now I’m reluctant to try your other beautiful recipes or waste quality ingredients on imbalanced recipes. I love your photos and creativity, thank you.

  • Lina Michon says:

    Super de bonne recette. C’est de valeur que c’est en anglais.

  • Nive says:

    Thank you so much for the recipe. I just followed it step by step (replaced mayo with butter). Cookies came out really well. It was delicious!

  • Shelley says:

    I tried this cookie recipe and it’s too sweet for me. But definely, I’ll bake it again and make sure to reduce the sugar. Thanks for sharing.

  • Christine Poganski says:

    This recipe is outstanding. I had to try it. I was so curious about the mayonnaise. Thank you so much! I can’t wait to include them in care packages to our family out of state😊

    • Amanda says:

      So glad you enjoyed them, Christine!

  • Joan Edwards Shoup says:

    I just finished the Mayo choc chip oatmeal cookies and I added another egg to the recipe. They turned out really good but seemed too dry with only one egg.

  • Amanda says:

    I like these a lot but they are so sticky ! Perhaps I just need to let them cool more? They came out of the oven about 15 minutes ago!

  • Norm Gagne says:

    Yes this the third time I’ve made them and each time they came out better and better. Now even the great granddaughter asks for then…

  • Areesha says:

    Can I substitute the mayo with butter?

  • Elena Mansur says:

    Hi!! I have made several of your recipes with my daughter, and my friends always want the recipe!
    I tried the mayo and it worked but I think I still like to use eggs and butter more. I don’t live in the 🇺🇸 (I live in Chile) so, many of the ingredients dont exist here, like brown sugar and butterscotch or peanut butter chips. So I do what I can 🥫

  • Ginger says:

    Hi—I baked these cookies. I did agree they were sticky getting off the sheet, but worth the care and patience in doing so. This was a good find cause right now in my area we’re having trouble finding flour and I’m conserving my butter as supply chains are not reliable. One thing I think I noticed—you left the salt out of the ingredients? Loved the explanation as to how the ingredients work together. Good recipe. Thanks for sharing.

    • Amanda Rettke says:

      Thank you for the feedback!! Will fix. 🙂

  • Catherine way says:

    I ever made a chocolate cake before with mayo,no butter .forgotten whether there is egg.very moist and soft.it,s more then 20yrs back.

  • Clayton says:

    I want to share my recipe for Chewy oatmeal chocolate chip cookies, its low in sugar and they are delicious:) I got this recipe from my Grandma years ago, so please try and let me know if you make them:)

    1 cup (125 grams) all-purpose flour (spooned & leveled)
    ½ teaspoon ground cinnamon
    ½ teaspoon baking soda
    ¼ teaspoon salt
    ½ cup (115 grams) unsalted butter, softened to room temperature
    ½ cup (100 grams) brown sugar
    ¼ cup (50 grams) granulated sugar
    1 large egg room temperature
    1 teaspoon vanilla extract
    1 and ½ cups (150 grams) old-fashioned rolled oats
    1 cup (190 grams) semisweet chocolate chips
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    Preheat oven to 350°F. Line two large baking sheets with parchment paper or silicone baking mats and set aside.
    In a medium-sized mixing bowl, whisk together the flour, cinnamon, baking soda, and salt. Set aside.
    In a separate large mixing bowl using an electric mixer, cream together the butter, brown sugar, and granulated sugar for about 1-2 minutes or until well combined. Mix in the egg and vanilla extract, stopping to scrape down the sides of the bowl as needed. Slowly add the dry ingredients to the wet ingredients and mix on low speed until just combined. Mix in the oats, then the chocolate chips until just combined. Cover tightly and refrigerate for at least 30 minutes.
    Using a 1.5-2 tablespoon cookie scoop, scoop the dough onto the prepared baking sheets, making sure to leave a little room between each one. Bake in separate batches (keep the other batch of cookie dough in the refrigerator while the first batch bakes) at 350°F for 10-13 minutes or until the tops of the cookies are set.
    Remove from the oven and cool on the baking sheet for 5-10 minutes, then transfer to a wire rack to cool completely.
    Prep time includes 30 minutes of chilling time in the refrigerator.
    Cookies will keep well in an airtight container on the counter for up to one week.
    To freeze the cookies: You may freeze the cookie dough for up to three months. Bake frozen balls of cookie dough for an additional 1-2 minutes. You may also freeze baked cookies for up to 3 months, thaw to room temperature before serving.

  • clayton says:

    I forgot to mention that you can double this recipe and it will make about 50 small cookies, it freezes well too:)

  • barbara says:

    i ended up having to add around two tbsp of flour because my first batch was a bit crumbly and wet, but after that they were great! i was wary about the mayo at first but realized that mayo is essentially eggs and oil LOL. the smell of the wet mix reminded me of how cake batter with buttermilk smells. overall a good recipe thank you!!