3 Ingredient Banana Oat Cookies Recipe tastes like banana bread hugged a chewy oatmeal cookie, with soft centers and toasty edges. It suits busy parents, athletes, and late-night snackers, and you can mix and bake a batch in about 18 to 20 minutes. I bake these after morning runs and track crumbs like a proud cookie detective.
Why You Should Try This 3 Ingredient Banana Oat Cookies Recipe
The 3 Ingredient Banana Oat Cookies Recipe delivers a naturally sweet, hearty cookie that feels wholesome and satisfying. You skip refined sugar and butter, yet you still get tender bites with a hint of banana and oatmeal. The dough mixes fast, the bake time stays short, and cleanup stays easy.
“Chewy, warm, and gone in minutes at my house, which counts as the highest praise.” ★★★★★
Ingredients You’ll Need
- 2 large very ripe bananas, mashed well (the spottier, the sweeter)
- 1 and 3/4 cups old-fashioned rolled oats (Quaker or Bob’s Red Mill work great; use certified gluten free oats if needed)
- 1/3 cup mix-in of choice, optional but fun: mini chocolate chips, chopped walnuts, raisins, or peanut butter chips
Pantry shortcuts and notes:
- Use quick oats if that’s what you have, and reduce the amount to 1 and 1/2 cups so the dough doesn’t dry out.
- Skip add-ins for true 3-ingredient cookies, or fold in a pinch of cinnamon, 1 teaspoon vanilla, or a small pinch of kosher salt to boost flavor.
- Overripe bananas mash smoother and sweeten the cookies more than firm bananas.
Equipment:
- Mixing bowl, fork or potato masher, rubber spatula
- Sheet pan lined with parchment or a silicone mat
- Cookie scoop or two spoons
How to Make 3 Ingredient Banana Oat Cookies Recipe
Prep the pan and heat the oven
- Heat the oven to 350°F and line a sheet pan with parchment or a silicone baking mat.
- Set out your add-ins so you move quickly once you mash the bananas.
Mash the bananas
- Peel and place the bananas in a bowl.
- Mash until very smooth with only tiny lumps, about 45 to 60 seconds with a fork or masher.
Mix the dough
- Stir in the oats until the mixture looks thick and cohesive.
- Fold in your chosen add-in if using. The dough should hold a scoop shape; add a tablespoon of oats if it feels loose.
Scoop and shape
- Scoop heaping tablespoon portions onto the lined pan, spacing about 2 inches apart.
- Gently flatten each mound to about 1/2 inch thick so the cookies bake evenly.
Bake
- Bake 12 to 15 minutes until the edges look set and the bottoms turn light golden.
- Rotate the pan at the 8-minute mark for even color if your oven bakes hot in the back.
Cool and enjoy
- Let the cookies cool on the pan 5 minutes, then move them to a rack to finish cooling.
- Eat warm or at room temp. The texture stays soft and chewy.
Tips & Tricks
- Use bananas with plenty of brown spots for the sweetest flavor and best moisture.
- Swap in quick oats when you want softer cookies that set a bit faster.
- Keep steel-cut oats out of this one since they stay too firm.
- Wet your fingers to press and shape the scoops without sticking.
- Add 1 tablespoon peanut butter to the mash for extra richness and protein.
- Boost flavor with 1 teaspoon vanilla or 1/2 teaspoon cinnamon.
- For crispier edges, bake on the darker side of the time range and let the cookies rest on the hot pan 2 extra minutes.
- Double the batch and freeze half of the baked cookies for grab-and-go breakfasts.
What to Serve with 3 Ingredient Banana Oat Cookies Recipe
Pair these banana oat cookies with hot coffee, cold brew, or a chai latte for a cozy morning. Add a dollop of Greek yogurt and fresh berries for a light breakfast plate. Spread a little peanut butter or almond butter on a warm cookie for a satisfyingly sticky bite. For dessert, sandwich two cookies around a small scoop of vanilla yogurt or ice cream.
Make-Ahead and Storage
Store cooled cookies in an airtight container at room temperature for 2 days. Keep them in the fridge up to 5 days if you prefer a slightly firmer chew. Freeze baked cookies in a zip-top bag with parchment between layers for up to 3 months. Reheat from room temp in a 300°F oven for 5 minutes or microwave one cookie for 10 to 12 seconds to bring back the warmth and softness.
3 Ingredient Banana Oat Cookies Recipe
Ingredients
Instructions
- Preheat the oven to 350°F (175°C) and line a sheet pan with parchment paper or a silicone baking mat.
- Peel the bananas and place them in a mixing bowl. Mash very well with a fork or potato masher until mostly smooth with only tiny lumps.
- Stir in the rolled oats until the mixture is thick and cohesive. Fold in your chosen mix-in, if using. If the dough feels loose, stir in an extra tablespoon of oats so it holds a scoop shape.
- Scoop heaping tablespoon portions of dough onto the prepared pan, spacing them about 2 inches apart. Gently flatten each mound to about 1/2 inch thick so the cookies bake evenly.
- Bake for 12 to 15 minutes, or until the edges look set and the bottoms are light golden. Rotate the pan after about 8 minutes if your oven browns more in the back.
- Let the cookies cool on the pan for 5 minutes, then transfer them to a wire rack to finish cooling. Enjoy warm or at room temperature; the cookies will stay soft and chewy.
Notes
Approximate per 1 cookie (12 cookies total, without optional mix-ins): 70–80 calories; fat 1 g; saturated fat 0 g; carbohydrates 16 g; fiber 2 g; sugars 5 g; protein 2 g; sodium 1–2 mg. Values will vary based on brands, optional add-ins, and portion size.