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Thin & Crispy Banana Oatmeal Cookies
If you can imagine a cross between oatmeal cookies and banana bread, this is it.
These unique cookies are crispy on the outside, chewy on the inside, and they taste like banana bread.
What you’ll need to make Banana Oatmeal Cookies
Step-By-Step Instructions
Begin by combining the flour, oats, baking soda, salt, and spices in a bowl. Whisk to combine and set aside.
In a large bowl, combine the butter, granulated sugar and brown sugar.
Beat until light and fluffy, a few minutes.
Add the mashed banana, egg, and vanilla.
Mix to combine.
Add the dry ingredients.
Mix on low speed to combine. The batter will be wetter than most cookie doughs.
Scoop the dough onto a parchment lined baking sheet, spacing the dough balls evenly apart.
Bake for about 15 minutes, or until golden.
Let the cookies cool for a few minutes on the baking sheet, then transfer to a rack to cool completely.
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Thin & Crispy Banana Oatmeal Cookies
If you can imagine a cross between oatmeal cookies and banana bread, this is it.
Ingredients
- 1-1/2 cups all-purpose flour, spooned into measuring cup and leveled-off
- 3 cups old-fashioned oats
- 1-1/2 teaspoons cinnamon
- 1/4 teaspoon nutmeg
- 1 teaspoon baking soda
- 1 scant teaspoon salt
- 2 sticks (1 cup) unsalted butter, softened but still cool
- 1 cup granulated sugar
- 3/4 cup light brown sugar, packed
- 1 large egg
- 2/3 cup mashed bananas, from 2 overripe bananas
- 1 teaspoon vanilla extract
Instructions
- Space two oven racks so that the oven is divided into thirds. Preheat the oven to 350°F. Line two baking sheets with parchment paper.
- In a medium bowl, whisk together the flour, oats, cinnamon, nutmeg, baking soda and salt. Set aside.
- In the bowl of an electric mixer, cream the butter, granulated sugar and brown sugar until light and fluffy, a few minutes. Scrape down the sides of the bowl and add the egg, mashed bananas and vanilla extract; beat until combined. Add the flour and oats mixture and mix on low speed until well combined. Do not overmix. The batter will be wetter than most cough doughs; that's okay.
- Scoop large balls of dough (about 1-1/2 tablespoons) onto the prepared baking sheet, spacing at least 3 inches apart, as they spread quite a bit (I use a small ice cream scooper with a wire scraper). Bake for 14-17 minutes, rotating the pans from top to bottom and front to back midway through, until golden brown. Cool on the baking sheet for a few minutes, then transfer to a wire rack to cool completely. Repeat with remaining cookie dough.
- Freezer-Friendly Instructions: The Cookie Dough can be Frozen for up to 3 Months: Roll the dough into balls, let set on a baking sheet in the freezer, then place in a sealable bag and press out as much air as possible. Bake as needed directly from the freezer. (Allow 1 to 2 minutes longer in the oven.) To Freeze After Baking: Let the cookies cool completely and store in an airtight container separating layers with parchment paper or aluminum foil. Before serving, remove the cookies from the container and let them come to room temperature.
Nutrition Information
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- Serving size: 1 cookie
- Calories: 128
- Fat: 5g
- Saturated fat: 3g
- Carbohydrates: 19g
- Sugar: 8g
- Fiber: 1g
- Protein: 2g
- Sodium: 83mg
- Cholesterol: 15mg
This website is written and produced for informational purposes only. I am not a certified nutritionist and the nutritional data on this site has not been evaluated or approved by a nutritionist or the Food and Drug Administration. Nutritional information is offered as a courtesy and should not be construed as a guarantee. The data is calculated through an online nutritional calculator, Edamam.com. Although I do my best to provide accurate nutritional information, these figures should be considered estimates only. Varying factors such as product types or brands purchased, natural fluctuations in fresh produce, and the way ingredients are processed change the effective nutritional information in any given recipe. Furthermore, different online calculators provide different results depending on their own nutrition fact sources and algorithms. To obtain the most accurate nutritional information in a given recipe, you should calculate the nutritional information with the actual ingredients used in your recipe, using your preferred nutrition calculator.
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Reviews & Comments
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About how many cookies from this recipe? Many thanks!
Hi Nel, this will make about 45 cookies. Enjoy!
Can you use quinoa flour to make this?
I’ve never worked with quinoa flour so I can’t say for sure, but for the most predictable results, I’d stick with all-purpose flour. Sorry!
1st time trying the recipe. I did 3/4 cup brown sugar and 1/2 cup white sugar. Everything else I followed. My cookies came out soft. Is it because of the sugar? How can I make sure they are crispy next time?
Thanks!
Yes, I strongly suspect cutting back the sugar impacted the texture.
First time trying this recipe and it was really good, definitely will make again, thank you!
OMG easy, tasty, & amazing recipe. I have been looking for a good banana cookie 🍪 recipe and I found it! THANK YOU.
Could I sub oat flour for the all purpose flour?
Hi Zehra, I’ve never put oatmeal flour these, so I can’t say from experience, but I suspect it will work (though the cookies will definitely be a bit drier and more dense). I’d suggest replacing no more than 1/2 cup of the all-purpose flour oat flour. Hope that helps — I’d love to hear how they turn out if you make them this way!
OMG. These are fantastic. I have celiac, so I switched the flour to gluten-free substitute. The cookie dough alone is irresistible. I flattened the cookies before baking them, to guarantee extra crispiness. I am very very pleased with the result. A real treasure of a recipe – thank you for sharing it!
My kids were wanting something flatter and crispier than my go-to Toll House I frequently make. So I searched for banana oatmeal cookies. This recipe came up and I was doubly excited because its a Jenn Segal recipe as well. The cookies turned out wonderfully perfect and were exactly what I was searching for. This will be my new go-to crispy oatmeal cookie recipe.
Making these today! What if i don’t have UNsalted butter?
Hi Joy, While it varies by brand, most salted butter has approximately 1/4 tsp. salt per stick, so you can use the salted butter and reduce the salt in the recipe as needed. Hope that helps!
This is just what I have been looking for!
I had one very ripe banana, so cut the recipe in half and adding a little more flour to compensate for the whole egg. I do not have a cookie dough scoop so used a soup spoon, which required 3 minutes more of baking. Next time I’ll use an eating teaspoon.
I shared with my daughter-in-law. She says, “A great breakfast cookie!”
I will definitely make these again, using the full recipe!!!
Suggestions: Please put the baking time — 15 minutes — on the printed recipe. Also how big the scoops of dough area. The picture is not a good gauge.
These turned out beautifully. I used the metric measurements, old fashioned oats, a mix of salted and unsalted butter and used a tablespoon of cinnamon, by mistake. They are great and I have shared the recipe.
I have made these on many occasions and they turn out well, my family loves them. I do use the regular old fashioned oats and not the quick oats. I think they absorb the liquid better. I also use butter and not margarine or butter substitute. I always use what the recipe calls for, otherwise I’m not making that recipe I’m making my own recipe and if it’s not what I expected then it’s my fault. I made these once without the banana, forgot to put it in. Came out really good, crispy oatmeal cookie.
Theses were great! I almost didn’t make them due to some comments but they turned out perfectly for me. A flavourful and filling cookie 🙂 Thanks for the recipe.
These were so easy to make with my daughter. I made them a little thicker than the picture but they were still crunchy but soft and so delicious! Love that I have another recipe for ripe bananas!
First let me say that I am not a baker, I’m an experienced cook and bake occasionally. But I did have overripe bananas and wanted something different to do with them than making banana bread.
I followed the instructions exactly, except I did not have parchment paper, but they came off the pan very easily. They are delicious and I will definitely make them again. It may have been my oven, but they were more fluffy than flat and crispy. They were delicious anyway, but I was looking forward to a really thin crispy cookie, that’s the only reason I gave it 4 stars.
I’m not sure why others have a problem with the batter being runny, I did not have that issue at all, but I do use a stand mixer. I hope this helps, and thanks for the great recipe.
This is a great recipe; tasty and easy to make; used 14 minutes to cook time – came out crisp around edges and soft and chewy in the middle – yum! Only had dark brown sugar which worked well; also I upped the cinnamon to 2 tsp, nutmeg to 1/2 tsp and vanilla to 1.5 tsp – wanted more flavor; going to add a 3rd banana next time and maybe leave in for 1 minute more to allow for extra moisture. Also, don’t have a good free standing electric mixer so rubbed the butter into dry ingredients first, then use a small handheld electric mixer/beater for about 2-3 mins – worked great. thank you will definitely make this again….
Had same issues as others with flat batter. I’m not a novice cook, so not sure what happened. I found them not tasty at all, very bland, and will probably throw them away. Such a waste of ingredients.
Hello, I made these cookies last week,and they came out perfect. I followed your recipe exactly, my dough and finished cookie looked exactly like your photos. I did add some walnuts to half the dough, but they were still good, moist and tender.
I have been baking/cooking like crazy, why not I’ve got the time! These were awesome! I did not have instant Oats, so I was a bit worried, but they turned out great. As always Jenn Segal has done my baking right.
YUM! I don’t know what people are doing to make these runny, but they turned out great for us. Maybe it has to do with your banana ripeness? Ours were good and ripe but not disgusting. I think we had the equivalent of two medium-large bananas. We used regular oats, skimped a bit on the sugar, and added raisins at the request of my 3-year-old. They are ooey-gooey and delightful!
Wow!! These banana oatmeal cookies are delicious. Whole family is home and they are eating them as fast as they come out of the oven. This is going to be a regular! Thanks Jenn!
I was suspicious of this recipe but we have banana bread and cake fatigue. However, no need, the cookies turned out great. Crispy outside, soft chewy inner. The whole batch snaffled very quickly by the fam. Will definitely be adding this recipe to our baking rotation.
Had the same issue of runny batter and the cookies spreading that another reviewer mentioned.
Hi Ali, Did you use frozen bananas? If so, did you drain off any extra liquid?
Made this today, doubled the recipe and in one half added chocolate chips and the other half chopped pecans … I also halved Both sugars. I used about 5 bananas in all and mashed them with a fork rather than the blended as I didn’t want them puréed. All in they turned out great, not flat like the picture but more peaked but no problem with too much liquid. Taste like banana Bread in a cookie 😋 yum.
I was a tad afraid after reading the reviews of runny dough but I gave it a try anyway. So very happy I did. I love these cookies I’m afraid I’ll be eating them all. Thanks for the delicious recipe 🤗.
I tried this recipe today but tweaked it to get a crunchier cookie by using less sugar and a couple tablespoons of milk plus adding 1/8 cup rice flour. Baking at lower temperature for longer (at the top of the oven) helps as well. I also patted down each ball flat and spread it out so they would bake faster at a lower temp. Worked great, nice crunchy cookies with a banana-oatmeal flavor!
Great cookies, crunchy on the outside and caky inside. Added walnuts and cut the white sugar down to 1/3 cup and they are plenty sweet. Hard to understand how some bakers get a runny batter, has to be frozen bananas as there is no liquid added.
I just made these and they are terrible; the batter was way too runny and no I didn’t use frozen bananas and because this was a new recipe to me I measured more accurately than a nuclear scientist in the lab. Absolutely tasteless and as they cooked they just morphed into a paper-thin wafer. I had divided the dough in half to add chocolate chips and I added an extra cup of flour, which helped them retain their shape somewhat but they were still bland. I won’t use this recipe again.
But…they could’ve been bland because you CHANGED the recipe by adding 1 whole cup of FLOUR!!? Yeah, that probably DID IT…ijs.🤨 if it needed an additional CUP of flour, surely Jenn would’ve added it…she IS the author and Chef.
I loved these!! Thank you! We had some extra bananas around the house so it was perfect. My husband said they were his favorite cookies that I’ve ever made (and I have been baking for us for years now). Great recipe and love that it’s something different than what I’ve made before! 🙂
delicious! I didn’t have any eggs so i use one tbsp of psyllium mix with 3 tbsp of water turned out great