Soft Banana Oat Cookies
After a long day of school runs, meetings, and homework battles, the last thing any of us needs is a complicated dessert recipe that leaves the kitchen looking like a bomb has hit it. That is precisely why I created these Soft Banana Oat Cookies; they come together in one bowl, require zero chilling, and are on the table before the kids have even finished asking what is for pudding.
Recipe Overview
- Prep time: 10 minutes
- Cook time: 12 minutes
- Total time: 22 minutes
- Servings: 14 cookies
- Difficulty: Very easy
Why You’ll Love This Soft Banana Oat Cookies
- One-bowl wonder: You mix everything in a single bowl, meaning less washing up and more time relaxing after dinner.
- No stand mixer required: A simple wooden spoon or spatula does the job perfectly, so you can whip these up even if your mixer is buried at the back of a cupboard.
- Naturally sweetened: Ripe bananas provide the bulk of the sweetness, so you can cut back on refined sugar without anyone noticing.
- Freezer-friendly: The dough freezes beautifully, meaning you can bake a few fresh cookies on a hectic Tuesday night without any extra effort.
- Kid-approved: My kids absolutely devour this every time I make it, and they have no idea there is a whole mashed banana hiding inside.
Ingredients You’ll Need
- 250g ripe bananas (about 2 large bananas, very spotty)
- 80g unsalted butter, melted
- 75g light brown sugar
- 1 large egg
- 1 tsp vanilla extract
- 150g plain flour
- 100g rolled oats
- ½ tsp bicarbonate of soda
- ½ tsp ground cinnamon
- ¼ tsp salt
- 100g dark chocolate chips or chunks
Tip: The riper your bananas, the sweeter and more intensely banana-flavoured your cookies will be. If your bananas are still slightly green, pop them in a warm oven for ten minutes to speed up the ripening process.
Equipment You’ll Need
- Large mixing bowl
- Fork or potato masher
- Wooden spoon or silicone spatula
- Baking tray (16 x 12 inch)
- Parchment paper
- Wire cooling rack
- Cookie scoop or tablespoon measure
How to Make Soft Banana Oat Cookies
- Preheat and prepare: Set your oven to 180°C (160°C fan) and line a large baking tray with parchment paper. The paper should lie flat and crisp; if it curls, fold the edges under themselves to keep it flat.
- Mash the bananas: In your large mixing bowl, mash the bananas thoroughly with a fork until they form a smooth, almost liquid paste with no visible lumps. You should see a pale, creamy yellow purée with a sweet, floral banana aroma.
- Add the wet ingredients: Pour in the melted butter, brown sugar, egg, and vanilla extract. Stir vigorously with your wooden spoon until the mixture looks glossy and evenly combined, about 20 to 30 seconds. The sugar should be mostly dissolved, and the batter will smell deeply of vanilla and caramel.
- Combine the dry ingredients: Sprinkle the flour, oats, bicarbonate of soda, cinnamon, and salt over the wet mixture. Fold gently with your spoon until just combined — stop as soon as you no longer see streaks of white flour. The dough will look slightly sticky, thick, and speckled with oat flakes.
- Fold in the chocolate: Tip in the chocolate chips and fold them through the dough with three or four turns of the spoon. You want the chips evenly distributed, with some peeking through the surface for visual appeal.
- Scoop and shape: Using a cookie scoop or a tablespoon, drop rounded mounds of dough onto the prepared tray, spacing them about 5cm apart. Each mound should be roughly the size of a golf ball, with a slightly rough, craggy surface.
- Bake until golden: Slide the tray into the middle rack and bake for 11 to 13 minutes. The cookies are done when the edges are set and lightly golden brown, while the centres still look slightly soft and puffy. You should smell warm bananas and toasted oats wafting from the oven.
- Cool and set: Leave the cookies on the tray for exactly 5 minutes — they will continue to firm up as they cool. Transfer them to a wire cooling rack using a thin spatula. The finished cookies should feel soft when pressed gently but hold their shape without crumbling.
Tips From My Kitchen
- Weigh your bananas for consistency: Banana sizes vary wildly, and too much banana makes the cookies dense and gummy while too little leaves them dry. Weighing ensures the moisture balance is spot on every time.
- Melt the butter, don’t soften it: Melted butter creates a chewier, softer texture than creamed butter. It also means you don’t need a mixer, which saves on both time and washing up.
- Use rolled oats, not instant: Rolled oats provide a pleasant, chewy texture that holds up during baking. Instant oats break down too much and can turn your cookies into a mushy, porridge-like mess.
- Make-ahead tip for busy weeknights: Scoop the dough into balls, place them on a tray, and freeze until solid. Transfer the frozen dough balls to a zip-top bag. When you need a quick dessert, bake them straight from frozen, adding 2 to 3 extra minutes to the baking time.
- Don’t overbake: These cookies continue to set as they cool, so pull them out when the edges are just set and the centres still look slightly underdone. Overbaking removes all the moisture and leaves you with dry, crumbly discs.
- Double the batch for the freezer: I always make a double batch because friends always ask me for this recipe after trying it at dinner parties. The unbaked dough keeps in the freezer for up to three months.
Common Mistakes to Avoid
- Overcrowding the pan: These cookies spread modestly, but they still need breathing room. Baking too many on one tray causes them to merge into one giant, unevenly baked sheet. Stick to six to eight cookies per standard tray, and bake in batches if needed.
- Wrong temperature: Baking at too high a temperature browns the outside before the inside has a chance to cook through, leaving you with raw centres. Conversely, too low a temperature dries them out entirely. Stick to 180°C (160°C fan) and use an oven thermometer if your oven runs hot or cold.
- Skipping the rest time: The five-minute rest on the hot tray is non-negotiable. During this time, the residual heat finishes cooking the centres while the edges set into a firm, chewy crust. Moving them too early causes them to fall apart.
Delicious Variations to Try
- Spicy Version: Add ½ teaspoon of ground ginger and a pinch of cayenne pepper to the dry ingredients. The warmth of the spices cuts through the sweetness beautifully and gives the cookies an unexpected kick.
- Vegan Option: Replace the butter with 80g of coconut oil (solid, not melted) and substitute the egg with a flax egg (1 tablespoon ground flaxseed mixed with 3 tablespoons water, left to thicken for 5 minutes). The cookies will be slightly less tender but still wonderfully soft and chewy.
- Different Protein: Swap the dark chocolate chips for 80g of chopped dried apricots and 50g of toasted flaked almonds. The tartness of the apricots pairs beautifully with the sweet banana and provides a lovely, fruity twist.
What to Serve With Soft Banana Oat Cookies
- A cold glass of milk or a warm mug of tea for a classic pairing
- A scoop of vanilla ice cream to turn them into an indulgent dessert
- A dollop of Greek yoghurt and a drizzle of honey for a healthier pudding option
- Alongside a Peanut Butter Chocolate Protein Smoothie for a quick breakfast treat
Still hungry for ideas? You might also love Banana Bread Cookies Recipe, Crumbl Banana Bread Cookies With Cream Cheese Glaze from our sister kitchens.
Frequently Asked Questions
Can I use wholemeal flour instead of plain flour?
Yes, you can substitute wholemeal flour for the plain flour, but the cookies will be denser and slightly less tender. I recommend using half wholemeal and half plain if you want a lighter texture while still adding fibre. The cookies will also brown a little more quickly, so keep an eye on them during the last few minutes of baking.
How do I store these cookies, and how long do they last?
Store the cookies in an airtight container at room temperature for up to four days. Place a piece of bread in the container to help keep them soft — the bread absorbs excess air and releases moisture, which prevents the cookies from drying out. You can also freeze the baked cookies for up to two months, wrapped individually in cling film.
Can I make these cookies without eggs?
Absolutely, and the cookies still turn out beautifully soft. Use a flax egg made from one tablespoon of ground flaxseed mixed with three tablespoons of water, and let it sit for five minutes until it becomes gelatinous. The texture will be slightly less fluffy but still wonderfully tender and moist.
Why did my cookies turn out dry and crumbly?
Dry cookies usually result from overbaking or using bananas that were not ripe enough. Ensure your bananas are heavily spotted and very soft, as this provides the necessary moisture. Also, pull the cookies from the oven when the edges are just set and the centres still look slightly underdone, as they continue to firm up while cooling.
Can I add nuts or dried fruit to this recipe?
Yes, feel free to swap the chocolate chips for up to 100g of chopped walnuts, pecans, or dried cranberries. If you are adding dried fruit, give it a quick rinse and pat it dry before folding it in, as this prevents the fruit from sinking to the bottom of the cookie. The nuts add a lovely crunch that contrasts beautifully with the soft, chewy oat base.
Soft Banana Oat Cookies
Soft, chewy banana oatmeal cookies with dark chocolate chips, made with ripe bananas and warm cinnamon.
Ingredients
Method
- Preheat and prepare: Set your oven to 180°C (160°C fan) and line a large baking tray with parchment paper. The paper should lie flat and crisp; if it curls, fold the edges under themselves to keep it flat.
- Mash the bananas: In your large mixing bowl, mash the bananas thoroughly with a fork until they form a smooth, almost liquid paste with no visible lumps. You should see a pale, creamy yellow purée with a sweet, floral banana aroma.
- Add the wet ingredients: Pour in the melted butter, brown sugar, egg, and vanilla extract. Stir vigorously with your wooden spoon until the mixture looks glossy and evenly combined, about 20 to 30 seconds. The sugar should be mostly dissolved, and the batter will smell deeply of vanilla and caramel.
- Combine the dry ingredients: Sprinkle the flour, oats, bicarbonate of soda, cinnamon, and salt over the wet mixture. Fold gently with your spoon until just combined — stop as soon as you no longer see streaks of white flour. The dough will look slightly sticky, thick, and speckled with oat flakes.
- Fold in the chocolate: Tip in the chocolate chips and fold them through the dough with three or four turns of the spoon. You want the chips evenly distributed, with some peeking through the surface for visual appeal.
- Scoop and shape: Using a cookie scoop or a tablespoon, drop rounded mounds of dough onto the prepared tray, spacing them about 5cm apart. Each mound should be roughly the size of a golf ball, with a slightly rough, craggy surface.
- Bake until golden: Slide the tray into the middle rack and bake for 11 to 13 minutes. The cookies are done when the edges are set and lightly golden brown, while the centres still look slightly soft and puffy. You should smell warm bananas and toasted oats wafting from the oven.
- Cool and set: Leave the cookies on the tray for exactly 5 minutes — they will continue to firm up as they cool. Transfer them to a wire cooling rack using a thin spatula. The finished cookies should feel soft when pressed gently but hold their shape without crumbling.
Notes
For best flavor, use very spotty bananas. Cookies will be soft when warm; let them cool on the tray for 5 minutes before transferring to a wire rack.
I would love to hear how these Soft Banana Oat Cookies turn out in your kitchen. Drop a comment below to share your experience, any tweaks you made, or if you tried one of the variations — I read every single one and always love hearing from you. And if you enjoyed this recipe, you might also love my Classic Banana Pudding With Vanilla Wafers for another quick, family-friendly treat that never fails to impress.
