These 3 ingredient banana oatmeal cookies are the answer to every “I want cookies but not the whole production” moment. Two ripe bananas, a cup of oats, and a handful of chocolate chips bake into soft, sweet little cookies with no flour, no eggs, no butter, and no added sugar.
They taste like banana bread’s healthy cousin: gently sweet, satisfyingly chewy, and ready from bowl to plate in twenty minutes.
They are ideal for toddlers, lunchboxes, clean-ish snacking, and using up the two bananas everyone ignored all week. They are naturally vegan, easily gluten-free with the right oats, and the kind of recipe you will memorize after one batch. The full method, including the flatten trick that makes them bake properly, is right below.
Recipe at a Glance
- Prep time: 5 minutes
- Bake time: 12 to 15 minutes
- Total time: about 20 minutes
- Servings: 12 cookies
- Difficulty: Very easy
- Method: One bowl, oven-baked
Ingredients You’ll Need
- 2 large ripe bananas
- 1 cup rolled oats (use certified gluten-free oats if needed)
- ¼ cup dark chocolate chips
- Pinch of fine sea salt (optional but recommended)
Ingredient Notes & Easy Substitutions
Bananas: The riper the better, because they are the only sweetener in the recipe. Heavily speckled or fully black bananas bring all the flavor, the same rule as every banana bake in this kitchen.
Two large bananas give you roughly one cup of mash, which is exactly what a cup of oats needs. If yours are small, use three.
Rolled oats: Old-fashioned rolled oats give the best chewy texture and hold their shape. Quick oats work and make softer, denser cookies. Steel-cut oats will not work here at all.
Oats are naturally gluten-free, but cross-contamination happens in processing, so choose certified gluten-free oats if that matters for your table.
Chocolate chips: The third ingredient and the reward for showing up. Dark chocolate keeps things grown-up; mini chips distribute better in such a small batch. Raisins, chopped nuts, or nothing at all are all valid.
The pinch of salt: Technically ingredient number four, and it is optional. It costs nothing and it is what stops these from tasting like health food. Use it.
Equipment You’ll Need
- One mixing bowl
- A fork for mashing
- Baking sheet lined with parchment paper
- Cookie scoop or tablespoon
- Silicone spatula
How to Make 3 Ingredient Banana Oatmeal Cookies
Mash, stir, scoop, bake. This is possibly the simplest cookie recipe in existence, and it still deserves to be done right. Follow with me.
Step One: Mash the Bananas
Peel the bananas into your mixing bowl and mash them with a fork until mostly smooth with a few small lumps remaining.
You are looking for a chunky paste, about one cup of mash. The lumps are fine; they melt into soft banana pockets as the cookies bake.
Step Two: Stir in the Oats
Add the oats and the pinch of salt and stir until every flake is coated in banana. The mixture will be thick, wet, and sticky.
You are looking for a uniform, scoopable mixture with no dry oats lurking at the bottom. If it seems too wet to hold shape, add another tablespoon of oats; too dry, another spoonful of banana.
Step Three: Fold in the Chocolate Chips
Fold in the chocolate chips with a spatula, distributing them as evenly as you can in two or three strokes.
You are looking for chips spread through the dough rather than clumped in one spot. In a batch this small, even distribution matters; some bites should get all the chocolate.
Step Four: Scoop and Flatten
Scoop tablespoon-sized mounds onto the lined baking sheet, about 2 inches apart. These cookies barely spread, so flatten each mound slightly with the back of the scoop or a wet fork into a little disc.
You are looking for 12 even discs about half an inch thick. The flattening step matters; left as balls, they stay doughy in the middle because there is no leavening or fat to help them spread.
Step Five: Bake
Bake at 350°F for 12 to 15 minutes, until the edges are set and the tops look dry and lightly golden underneath.
You are looking for cookies that hold together when lifted but still feel soft. They will not brown much, so judge by touch; the tops should be dry rather than wet, and the edges should feel firm.
Step Six: Cool on the Sheet
Let the cookies rest on the baking sheet for 5 minutes before moving them to a rack. They firm up as they cool and are genuinely wonderful while still warm.
You are looking for tender, chewy little cookies that bend rather than crumble. Without eggs and butter they are delicate warm, so give them that short rest before lifting.
Serving Size & Batch Scaling
This recipe makes 12 small cookies, a perfect snack batch for a household or a toddler’s week. Because the batch is so quick, scaling usually means just mixing again rather than doubling in one bowl; but doubling works perfectly fine when you have four bananas to rescue.
The ratio to remember is simple: one banana per half cup of oats, plus a small handful of chips per two bananas. From there you can scale to any number of forgotten bananas.
Making More or Less?
- 6 cookies: One banana, half a cup of oats, 2 tablespoons of chips. Same everything, half the tray.
- 12 cookies: The recipe as written.
- 24 cookies: Double everything into 4 bananas, 2 cups of oats, half a cup of chips. Bake on two sheets or in two rounds.
For any batch: flatten the scoops, keep the bake at 350°F, and judge doneness by dry tops rather than color. These cookies stay pale and that is normal.
Nutrition Estimate Per Serving
The following is an estimated nutritional breakdown per cookie (1 of 12), calculated from the ingredients in this recipe. It is an estimate, not medically precise information.
- Calories: ~50
- Protein: 1g
- Carbohydrates: 9g
- Fat: 1.5g
- Fiber: 1g
- Sugar: 3g (all from fruit and chocolate)
- Sodium: ~25mg
Useful highlights: no flour, no eggs, no butter, and no added sugar means each little cookie lands around 50 calories with a gram of fiber from the oats and banana. They are naturally vegan and can be fully gluten-free with the right oats.
Common Mistakes to Avoid
Using underripe bananas. They are the only sweetness here. Pale bananas make bland cookies, and there is no sugar waiting to rescue them.
Skipping the flatten. Rounded scoops stay raw in the middle. Two seconds with a fork turns them into proper little cookies.
Overbaking. These go from soft to dry quickly past the 15-minute mark. Dry tops and set edges are your cue, not color.
Expecting bakery cookies. These are tender, wholesome little things, not rich butter cookies. Judged on their own terms, they are genuinely great.
Troubleshooting Guide
My cookies are too wet in the middle. What happened? Oversized bananas or unflattened scoops. Flatten next time, and if the mash was very generous, add an extra tablespoon of oats.
They are crumbly and fall apart. Why? Not enough banana binding the oats. Stir in a spoonful more mashed banana until the mixture holds together when squeezed.
They taste bland. How can I improve them? The pinch of salt, riper bananas, and a shake of cinnamon fix nearly everything. A drop of vanilla helps too, though it breaks the three-ingredient title.
Can I add peanut butter? Yes, and you should try it; two tablespoons stirred in makes them richer and more filling. It becomes a four-ingredient cookie and nobody will mind.
Variations & Customizations
Peanut butter version: Stir in 2 tablespoons of creamy peanut butter with the banana. Richer, more filling, still wholesome.
Cinnamon raisin version: Swap the chips for ¼ cup raisins and add ¼ teaspoon cinnamon. Oatmeal-raisin energy in cookie form.
Coconut version: Replace the chips with ¼ cup shredded coconut. A little tropical, a little chewier.
Nut butter chip version: Use peanut butter chips or white chocolate chips instead of dark. Kids vote for this one every time.
If you want the fully loaded, buttery classic instead, my chewy banana oatmeal cookies are the indulgent sister recipe. This simple ratio follows the beloved version from The Honour System, and the no-bake variation at The Roasted Root skips the oven entirely if that suits your day better.
What to Serve With It
For toddlers: The ideal first cookie: soft, naturally sweet, and nothing in it you need to apologize for. Always check oats are safe for your little one’s stage.
For breakfast: Two cookies with yogurt and fruit. It is basically overnight oats in cookie form.
For a snack: With a glass of milk or a coffee at three in the afternoon. The twenty-minute recipe makes it an easy yes.
Post-workout: A couple of cookies and a banana make a genuinely decent recovery snack, thanks to the carbs and potassium.
1 thought on “3 Ingredient Banana Oatmeal Cookies Recipe”