Banana Baked Oat Bars
Perfect for busy mornings, these Banana Baked Oat Bars make a fab grab-and-go breakfast or satisfying snack. They also freeze brilliantly, so you can batch cook a tray, pop them in the freezer, and have a wholesome treat ready whenever you need it.
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NutritionPer Serving
- Calories150
- Fat3.9g
- Saturates1.2g
- Carbs25g
- Sugars6.6g
- Protein4.4g
For the full list of ingredients and comprehensive instructions, please see the recipe card below. Before you scroll, there’s important stuff in the blurb!
If you’ve got a couple of ripe bananas sitting in the fruit bowl, this is your sign to put them to good use. These Banana Baked Oat Bars are a tasty sweet treat that’s packed with hearty oats to keep you feeling fuller for longer. They’re the kind of recipe that works just as well with your morning cuppa as they do tucked into a lunchbox or enjoyed as an afternoon pick me up.
Everything gets mixed together in one bowl, then baked until golden and sliceable. No complicated steps, no fancy ingredients, just simple store cupboard staples coming together to make something seriously satisfying. They’re also ideal for a bit of batch cooking. Whip up a tray at the weekend, portion them up and you’ll have a ready made breakfast or snack sorted for the days ahead.
What diets are these Banana Baked Oats suitable for?
These Banana Baked Oat Bars can easily be made gluten and dairy-free. If you’re cooking for some with a gluten or dairy intolerance, just be sure to swap out the following ingredients for suitable versions:
- Flour
- Chocolate
Remember to take extra care when you’re cooking for people with allergies. Use separate utensils, cookware, and preparation surfaces.
Do you need any special ingredients to make Banana Baked Oats?
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These Banana Baked Oats are dead easy to make, with no fancy kitchen gadgets — just a 7-inch square baking tin. If you don’t have one already, we’ve popped a link below. You’ll find everything else on your local supermarket shelves.
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If you don’t have a square baking tin already, you can find one like this easily online. 
How many calories are in these Banana Baked Oat Bars?
There are only 150 calories in one of these Banana Baked Oat Bars, which means they falls into our Everyday Light category. These are all dishes under 400 calories, ideal for when you’re after a lighter bite (just like the category name suggests!), and they fit with diet plans like Weight Watchers if you’re calorie counting.
As a guide, an average man needs around 2,500kcal (10,500kJ) a day to maintain a healthy body weight. For an average woman, that figure is around 2,000kcal (8,400kJ) a day. Obviously, if your goal is to lose weight, then you might want to adjust these slightly. You can read more about these recommendations on the NHS website.
Step 1
Preheat the oven to 180ºC and line a 7-inch square tin with non-stick baking paper.
Step 2
Add the bananas to a bowl and mash well with a fork. Add the egg, sweetener, and cinnamon, and mix.
Step 3
Add the oats and chocolate chips, and mix until combined.
Step 4
Scrape the mixture into the lined tin, and smooth out the top — until flat.
Step 5
Pop the tin into the oven for 20 minutes until the mixture is just set, and the top is turning golden brown. Remove from the oven and cool in the tin. Slice into 8 bars.
What could I serve with Banana Baked Oat Bars?
These Banana Baked Oat Bars are delicious on their own, or you could serve them as picky bits alongside any of the following:
How do you know when these Banana Baked Oat Bars are cooked?
You can tell your Banana Baked Oat Bars are cooked when the mixture is set and the top has turned a lovely golden brown colour. This will take around 20 minutes in your oven.
As per UK food safety guidelines, always cook meat until it reaches 75ºC and stays at that temperature for at least two minutes. This is to keep you and whoever it is you’re cooking for safe.
How long can you keep Banana Baked Oat Bars in the fridge?
Once you’ve served up your Banana Baked Oat Bars, ideally you should eat them within 4 hours.
If you do hang onto any leftovers, be sure to refrigerate them in an air-tight container with a lid. You can store Banana Baked Oat Bars in the fridge for approximately 3 days or so.
Can I freeze Banana Baked Oat Bars?
Yes, you can! This recipe can be frozen after baking, just remember to do the following:
- Freeze with non-stick baking paper between the bars to stop them sticking together
- Freeze them as soon as they’re cold enough.
- Use a container suitable for freezing.
- Don’t forget to add a label reminding you what they are, and on what date you put them in the freezer!
How do I reheat Banana Baked Oat Bars?
From chilled: Allow them to sit at room temperature for 10 minutes, or microwave them for a few seconds.
From frozen: Allow them to fully defrost at room temperature for 1-2 hours, in the refrigerator overnight, or by microwaving them for a few seconds.
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Banana Baked Oat Bars
Perfect for busy mornings, these Banana Baked Oat Bars make a fab grab-and-go breakfast or satisfying snack. They also freeze brilliantly, so you can batch cook a tray, pop them in the freezer, and have a wholesome treat ready whenever you need it.
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Prep Time
10 MINS
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Cook Time
20 MINS
- KCals 150
- Carbs 25G
Instructions
- Preheat the oven to 180ºC and line a 7-inch square tin with non-stick baking paper.
- Add the bananas to a bowl and mash well with a fork. Add the egg, sweetener, and cinnamon, and mix.
- Add the oats and chocolate chips, and mix until combined.
- Scrape the mixture into the lined tin, and smooth out the top — until flat.
- Pop the tin into the oven for 20 minutes, until the mixture is just set and the top is turning golden brown. Remove from the oven and cool in the tin. Slice into 8 bars.
Looking for Slimming World Syns or Weight Watchers (WW) Points?
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Recipe notes
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6 comments
See what others have to say
NinaThursday 26th February 2026
If I was to use regular sugar, would that alter the amount?
HollyTuesday 31st March 2026
Hey Nina, we use sweetener that has the same weight and texture as sugar so you can easily swap the sweetener for sugar if you prefer for the same amount, you will need to adjust the calories accordingly, hope that helps!
NettieMonday 23rd February 2026
Could I swap chocolate for sultanas
HollyWednesday 25th February 2026
Hi Nettie, yes you could swap for sultanas and alter the calories accordingly, hope that helps!
CvMonday 23rd February 2026
Can you use raisins instead of chocolate chip
HollyWednesday 25th February 2026
Hey, yes you could swap for sultanas and alter the calories accordingly, hope that helps!
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