Who wouldn’t want to eat a giant oatmeal cookie for breakfast? This overnight breakfast cookie lets you do just that!

No bake, vegan, with just 6 ingredients.
A single serving oatmeal breakfast cookie you can easily customize.
Mix the ingredients together the night before to have a wholesome breakfast the next morning, ready whenever you want it!
Readers also love this Almond Flour Banana Bread

The “single lady” breakfast cookie was inspired by two things.
First was an email I received from a reader who asked if I could come up with a recipe similar to the Erin Baker Breakfast Cookies sold in stores.
Her email reminded me of an idea I’d written down years ago but had never actually gotten around to trying.
There’s a recipe on my blog for Snickerdoodle Oatmeal, and one day a blogger named Abbie (whose blog is sadly no longer in existence) recreated my oatmeal recipe in the form of a giant breakfast cookie and posted about it on her blog.
She combined all of the ingredients in a bowl, spread the batter on a plate, and let the extra moisture evaporate overnight so it turned into a soft and delicious no-bake snickerdoodle breakfast cookie.
Her idea was so brilliant, and I don’t know why I didn’t try it until now! For more healthy breakfast ideas, be sure to check out the link below:

The flavor possibilities are endless…
Peanut Butter
Chocolate Brownie
Coconut
Banana Walnut
Cinnamon Raisin
Espresso Chocolate Chip
Cookie Dough
Watch the overnight breakfast cookie video above.

Overnight Breakfast Cookie
Ingredients
- 1/2 cup rolled oats
- 1/2 cup mashed banana or applesauce
- 2 tbsp milk of choice
- 1 1/2 to 2 tbsp protein powder or flour, such as almond or oat flour
- 1 to 2 tbsp nut butter or allergy-friendly sub
- 1/8 tsp salt
- optionsl add-ins such as chia seeds, raisins, shredded coconut, or chocolate chips
Instructions
- Stir all ingredients together. Spread out on a plate. Refrigerate overnight, uncovered or with a paper towel placed gently on top. Frost if desired, or add toppings such as melted peanut butter and chocolate. Enjoy!View Nutrition Facts
Notes
More Healthy Breakfast Options
Or these flourless Keto Blueberry Muffins






















just made this using one full mashed banana (didn’t have measuring cups handy) and the batter looks really gooey… how much of a ‘nana is half a cup? i’m going to eat it either way, just really hoping it doesn’t have too much moisture to “bake” in the fridge tonight! fingers crossed 🙂
Depends on the size of the banana!
Breakfast this morning!
New fan here. I’m excited to try this one out, maybe with almond butter and mini chocolate chips thrown into the batter. Or raspberry jelly and mashed banana on top.
I made one with almond flour because I don’t do protein powder. It worked great! Already have tomorrow’s in the fridge 🙂
I would not use flour in a no-bake recipe. I emailed Katie about this yesterday and am hoping she will adjust the recipe. Do you remember the big e coli outbreak a few years ago from raw cookie dough? It wasn’t the eggs in the dough that were the problem…it was the flour. It was emphasized that flour is meant to be baked, and you should not eat it raw. I know lots of people will do it anyway, but to me it isn’t worth the risk and shouldn’t be suggested in a recipe, especially when people reading may not be aware of the risk. https://www.consumerreports.org/e-coli/avoid-e-coli-infection-from-flour/
Almond flour is not actually flour. Nor is oat flour part of the recall. The two Katie suggests are fine to use, as the recall was only concerned with wheat flour (and even then, only a specific brand and variety that had been contaminated). Other ingredients, such as peanut butter, sometimes have recalls, but that doesn’t mean they aren’t safe to use in raw recipes. To summarize, the flours Katie suggests are fine to eat raw. And there are many views that say even wheat flour is fine to eat raw. Hope that helps clarify. http://www.cnn.com/2016/07/22/health/eat-raw-cookie-dough/index.html
Can you sub coconut flour?
You can always experiment! Probably you will need less though, or less liquid.
I made a pumpkin one and put dark chocolate dreams PB&CO on top and it was my favorite breakfast I have had all month. I love how you don’t have to use an oven or cook anything at all. Thanks for the recipe!
nice i love chocolate.Great idea thanks for sharing it!
Love the recipes you post with protein powder. Keep them up!
Can you list specific products you used to get that nutritional info?
Can you prep a few in one night and eat throughout the week?
Hi Katie,
Yum!! Like all of your recipes, this is so delicious! Thanks for the great recipe.
I would love to be a part of your team.
Hoping to hear from you soon!
Christina
has anyone tried adding the chia seeds yet? i’m wondering if it would firm it up a bit more. also, how much chia seeds should one add???
Mine never “hardened” up, the goo tastes good, but I need to take it somewhere, wondering if I could toss it in the oven for a few minutes
You can!
OMG! I hate oatmeal but decided to give this a try as I had some protein powder. Wow. .It was delicious, huge and had me so filled that I did not snack the entire day until 5pm!!!! LOVE IT! Now I make this every other night for the next morning! THANK YOU Katie!
My cookie is still really mushy this morning. It doesn’t lift off the plate, I would have to eat it with a fork or spoon. Anyway to make it more firm?
Thanks for your wonderful and simple recipes!
Just wondering why my nutrition calculations never match up. It says the whole recipe is 241 calories, but just 1/2 cup of oats (150 calories) and 1 tbsp of nut butter (100 calories) adds up to more, not to mention the other ingredients. Where am I going wrong?!?! Thanks for clarifying 😀
Thanks for catching this. It looks like the online calculator Katie uses has some ingredients’ calories listed incorrectly in the database. I’ve just let her know to check on this recipe and fix it accordingly, so it should be updated today. Sorry for the trouble, and thank you again for noticing this.
Jason (media relations)
Thank you for the reply ?
This was so easy and delicious. I love how it can be customized. If I have time in the morning, I bake the cookie for a super happy morning. If I don’t have time then I eat it straight from the fridge for an equally happy morning. Thanks for sharing your creativity and food genius with the world!