These 3 ingredient banana oatmeal cookies are a simple way to turn ripe bananas into a soft, naturally sweet breakfast snack. Mashed banana supplies moisture and binding, rolled oats give the cookies body, and cinnamon adds gentle warmth. There is no egg, flour, added sugar, or complicated mixing step. Shape the small batch by hand, bake until set, and let the cookies cool just enough to firm up while staying pleasantly tender.
What Are 3 Ingredient Banana Oatmeal Cookies?
They are soft, cake-like breakfast cookies made from ripe bananas, rolled oats, and ground cinnamon. The texture is closer to a tender baked oatmeal than a crisp bakery cookie, so they are best enjoyed as a wholesome snack or quick morning bite. With about eight cookies from one batch, the recipe is intentionally small and practical for using two very ripe bananas.
Why This Simple Recipe Works
Ripe bananas bring concentrated sweetness and enough moisture to hold the oats together. Oats absorb that moisture as the batter rests, which makes the mixture easier to portion. Cinnamon gives the cookies a rounded flavor without adding another complicated ingredient. Because the cookies do not spread in the oven, shaping them before baking controls their final thickness and helps them cook evenly.
How to Make 3 Ingredient Banana Oatmeal Cookies
Heat the oven first, then mash the bananas thoroughly. A few small pieces are fine, but a mostly smooth mash creates a more cohesive cookie. After mixing, give the oats a few minutes to hydrate before deciding whether the batter needs the optional extra tablespoon or two of oats.
Ingredients
- 2 ripe, spotty bananas, mashed, about 200 g
- 1 cup rolled oats, old-fashioned or quick-cooking
- 1 teaspoon ground cinnamon

Method
- Preheat the oven to 350°F. Peel and mash the bananas in a medium bowl until only small chunks remain.
- Stir in the rolled oats and cinnamon. Let the mixture sit for a few minutes so the oats absorb moisture; if it remains very wet, add 1 to 2 tablespoons more oats.
- Line a baking tray with parchment paper or a silicone baking mat.
- Drop spoonfuls of batter onto the tray and shape them with your fingers into about eight medium cookies, since they will not spread while baking.
- Bake for 17 minutes.
- Remove from the oven and cool slightly before serving.

How to Tell When They Are Done
The cookies should look set around the edges and hold their shape when gently nudged. They will remain soft because banana and oats create a moist, tender center; do not wait for them to become crisp or deeply browned. Letting them cool on the tray for a few minutes allows the oats to finish setting and makes them easier to lift without breaking.
Serving Ideas
Serve these banana oatmeal breakfast cookies warm or at room temperature with coffee, tea, or a glass of plant milk. They fit naturally into a packed breakfast or snack box because their compact shape makes them easy to portion. For an optional variation, add a small amount of chopped nuts, raisins, or unsweetened coconut to the batter, but keep those additions separate from the three-ingredient primary recipe.
Tips for Better Cookies
Use bananas that are ripe and spotty rather than firm yellow fruit; they mash more smoothly and provide more sweetness. If the mixture looks loose after resting, add oats gradually instead of adding a large amount at once. Line the tray completely, because the cookies can stick to an unlined pan. Shape each portion to an even thickness so the centers and edges finish at the same time.
Choosing Bananas and Oats
The bananas should be ripe enough to show brown spots, because that is when their flavor is sweetest and their flesh is soft enough to mash. Very firm bananas can leave a batter that tastes flat and does not bind as well. Weighing the peeled fruit is useful when the bananas are unusually large or small, but the recipe remains forgiving when you stay close to the stated two bananas.
Both old-fashioned and quick-cooking oats are suitable. Old-fashioned oats give more chew and visible texture, while quick-cooking oats make a softer, more uniform cookie. Avoid substituting instant flavored oatmeal, since its added sweeteners and seasonings can change the moisture balance and the intended three-ingredient flavor.
Texture, Shape, and Batch Size
These cookies are deliberately soft rather than crisp. The banana keeps the center moist, and the oats continue absorbing moisture as the cookies cool. For a firmer edge, shape the cookies slightly thinner and give them the full baking time, watching for set edges. For a softer center, keep them a little thicker and cool them only briefly before serving.
The recipe makes about eight medium cookies, but portion size is flexible. Smaller portions may finish sooner, while large thick cookies need more time to set. Keep portions similar on one tray so that you do not have to remove some cookies early while others are still wet in the center.
A Practical Make-Ahead Breakfast
Mixing the batter takes only a few minutes, making these cookies useful when a pair of overripe bananas needs a purpose. You can prepare the tray while the oven heats, then bake the cookies as soon as the mixture has rested. They are especially convenient for a simple breakfast alongside fruit or for a small snack that does not require utensils.
Storage and Reheating
Cool the cookies fully before storing them in a covered container in the refrigerator. Because they contain moist banana and no preservatives, use them within several days for the best texture. Warm one briefly in the microwave when you want a softer, just-baked feel, or let it come to room temperature for a firmer snack. Do not store them while still hot, or condensation can make the surfaces sticky.
Search Answers for Banana Oatmeal Cookies
Are these banana oatmeal cookies naturally sweet?
Yes. The primary recipe uses the sweetness of ripe bananas and contains no added sugar.
Can I make them without eggs?
Yes. Mashed banana binds the oats, so this recipe does not use eggs.
Do banana oatmeal cookies spread?
No. Shape them to the size and thickness you want before baking because they keep that form in the oven.
FAQ: Banana Oatmeal Cookies

With ripe bananas, a cup of oats, and a little cinnamon, you can make a small, flexible batch of soft cookies with very little prep. Shape them carefully, bake until just set, and allow the short cooling period to bring the texture together.

3 Ingredient Banana Oatmeal Cookies
Ingredients
Ingredients
- 2 bananas ripe and spotty, mashed, about 200 g
- 1 cup rolled oats old-fashioned or quick-cooking
- 1 teaspoon ground cinnamon
Instructions
Instructions
- Preheat the oven to 350°F. Peel and mash the bananas in a medium bowl until only small chunks remain.
- Stir in the rolled oats and cinnamon. Let the mixture sit for a few minutes so the oats absorb moisture; if it remains very wet, add 1 to 2 tablespoons more oats.
- Line a baking tray with parchment paper or a silicone baking mat.
- Drop spoonfuls of batter onto the tray and shape them with your fingers into about eight medium cookies, since they will not spread while baking.
- Bake for 17 minutes.
- Remove from the oven and cool slightly before serving.
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