3-Ingredient Banana Oatmeal Cookies
These 3-ingredient banana oatmeal cookies are the answer when you need a quick, wholesome treat with almost no work. They come together in a single bowl, bake fast, and use pantry staples you probably already have.
No flour, no added sugar, no fuss. Just ripe bananas, old-fashioned oats, and whatever mix-in you’re in the mood for.
What Makes These Cookies So Good
Ripe bananas do all the heavy lifting here, giving you a soft, naturally sweet cookie without a single granule of added sugar. The oats bring a satisfying chew and hold everything together.
You can lean into simple, leaving them plain with just a whisper of cinnamon, or toss in dark chocolate chips for a little more decadence. They’re the kind of cookie that feels like a real treat but uses ingredients you’d be happy feeding a toddler.
Ingredients
- 2 ripe bananas, mashed: the spottier the peel, the sweeter the cookie.
- 1 cup old-fashioned rolled oats: quick oats will work in a pinch but make the texture softer.
- 1/3 cup mix-ins: dark chocolate chips, chopped walnuts, or dried cranberries all work well.
Variations / Substitutions
- Gluten-free: use certified gluten-free rolled oats and the cookies are naturally gluten-free.
- Nut-free: skip walnuts and use sunflower seeds or extra chocolate chips instead.
- Spice it up: a pinch of cinnamon or a tiny scrape of nutmeg added with the oats changes the whole vibe.
Coffee Banana Smoothie goes great with these cookies when you want something to sip.
How to Make Banana Oatmeal Cookies
Step 1: Mash the Bananas
Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper. In a large bowl, mash the 2 bananas with a fork until they’re mostly smooth, about 1 minute. A few small lumps are fine and actually give the cookies a little more texture.
Step 2: Stir in the Oats
Add the 1 cup of oats to the bowl and stir until every flake is coated in banana. The mixture will look like a thick, shaggy batter. Don’t worry if it seems wet; the oats absorb moisture as they bake.
Step 3: Fold in the Mix-Ins
Scatter the 1/3 cup of chocolate chips (or your chosen add-in) over the dough and fold them in with a spatula or spoon. Give it a couple of extra stirs to distribute everything evenly, but avoid overmixing or the cookies can turn out tough.
Step 4: Bake and Serve Warm
Drop rounded tablespoons of dough onto the prepared baking sheet, spacing them about 2 inches apart. Bake for 12 to 14 minutes, until the edges are set and lightly golden. Let the cookies cool on the sheet for 5 minutes so they firm up, then transfer them to a wire rack. Dig in while they’re still warm, the chocolate will be melty and the centers soft.
Tips for the Best Banana Oatmeal Cookies
- Use bananas with plenty of brown spots. Less ripe fruit means a bland, starchy cookie.
- If your dough looks soupier than stiff oatmeal, add another tablespoon of oats. Banana sizes vary a lot.
- For a thicker, puffier cookie, chill the dough in the fridge for 10 minutes before scooping.
- These cookies are naturally low in sugar, so they won’t brown deeply. Rely on the timer, not color alone.
Bake times by texture:
| Texture | Time |
|---|---|
| Chewy | 12 mins |
| Crispy | 15 mins |
Keeping These Cookies Fresh
- Room temperature: store in an airtight container for up to 2 days. The bananas keep them moist, so they won’t dry out quickly.
- Refrigerate: they’ll hold for 5 days in the fridge, though the texture gets a bit more dense.
- Reheating: a 10-second zap in the microwave brings back that just-baked softness.
Frequently Asked Questions
Can I use quick oats instead of rolled oats?
Yes, but the cookies will be softer and less chewy. Quick oats absorb moisture faster, so the dough may feel thicker right away.
My cookies turned out mushy. What went wrong?
The bananas were probably extra large, or the cookies needed 2 to 3 more minutes in the oven. Make sure to measure the bananas as “medium” fruit, about 7 inches long.
Are these cookies healthy?
They’re certainly a wholesome option with no added sugar and whole-grain oats. Treat them as a nourishing snack rather than a low-calorie food.
Can I make a bigger batch?
Absolutely. Double all the ingredients and bake on two sheets, rotating them halfway through. The bake time stays the same.
Banana Oatmeal Cookies Recipe
Ingredients
Method
- Preheat oven to 350°F (175°C) and line a baking sheet with parchment. Mash bananas in a bowl until smooth.
- Stir in rolled oats until fully combined.
- Fold in mix-ins of your choice.
- Spoon dough onto the sheet, bake 12-14 minutes until edges are golden, then cool 5 minutes on the sheet. Serve warm.
Notes
