Oat & Chia Slices

Few treats strike a balance between convenience and nourishment as successfully as Oat and Chia Slices.
They’re quick to prepare, bake up in under an hour, and offer a hearty blend of fibres and nutrients.
Whether you’re rushing out the door in the morning or looking for a wholesome snack to enjoy throughout the day, these slices are a reliable option that can easily be made sweeter with a dash of maple syrup or more decadent when served with coconut yoghurt.
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Ingredients You’ll Need
Here’s a list of everything you’ll need to make this Oat & Chia Slices recipe:
- 1 banana
- 2 cups oats
- 1/2 cup chia seeds
- 1/4 cup almond meal
- 1 cup flour
- 500ml milk
- 1/2 tsp vanilla extract
- 1 cup frozen berries
- OPTIONAL: 1/2 cup maple syrup
Why Oats Make a Fantastic Base
Oats are a staple in many healthy bakes due to their mild flavour and great texture.
They provide a satisfying chewiness, soak up liquid effectively, and help bind everything together without needing additional thickeners.
Plus, they’re known for their soluble fibre, which can be beneficial for digestion and help keep you feeling full between meals.

Getting the Most Out of Chia Seeds
Chia seeds are tiny nutritional powerhouses.
When combined with moisture, they develop a gel-like coating that aids in binding the ingredients.
This unique property also contributes to the slices’ moist and tender crumb.
Beyond texture, chia seeds supply omega-3 fatty acids, fibre, and various micronutrients that complement the oats and almond meal beautifully.
Embracing Bananas for Natural Sweetness
Bananas are a wonderful way to add gentle sweetness and a hint of fruitiness without relying on refined sugar.
Mashing them thoroughly creates a smooth base that merges seamlessly with the other ingredients.
If you prefer a bolder banana taste, make sure to use overripe bananas with plenty of brown spots, as they’re naturally sweeter.

Making Room for Berries
Frozen berries lend bursts of tartness and colour that brighten the slices.
While you could swap in fresh berries if you like, frozen varieties often allow for greater convenience and availability year-round.
Just remember to fold them in gently right before baking, so the colour doesn’t bleed excessively into the mixture.
How to Make This Oat & Chia Slices Recipe
Step 1: Mash the banana
Begin by peeling your banana and placing it in a large mixing bowl.
Use a fork or potato masher to break it down into a smooth purée.
If the banana is underripe, you might need a bit of extra pressure, but riper bananas will mash easily.

Step 2: Combine dry ingredients
Next, add the oats, chia seeds, almond meal, and flour to the bowl.
Take a few moments to stir these ingredients together, ensuring everything is well-distributed.
This preparation step helps prevent clumps later when you add the liquids.
Step 3: Incorporate wet ingredients
Pour in the milk and vanilla extract.
If you’d like a sweeter treat, drizzle in up to half a cup of maple syrup.
Stir the batter until it’s fully combined, then set it aside for around 10 minutes.
This brief resting period lets the chia seeds begin absorbing moisture, contributing to a thicker, more cohesive texture.

Step 4: Gently fold in frozen berries
Take your frozen berries and scatter them over the mixture.
Using a spatula or large spoon, fold them in with just a few turns—overworking the berries can release their juices, colouring the entire batter.
A light hand at this stage ensures you get attractive pops of fruit in your final slices.

Step 5: Transfer to a baking tray
Line or grease a suitable baking tray to prevent sticking.
Carefully pour the batter in, making sure it’s spread evenly from corner to corner.
Aim for a uniform thickness so the slices cook at the same rate.
Place the tray into an oven preheated to 190°C and bake for approximately 30–40 minutes, depending on how golden you prefer the edges.
Step 6: Cool and slice
When the slices look done—slightly firm on top and golden around the edges—remove the tray from the oven.
Let them cool in the tray for at least 10 minutes to allow the structure to set.
Once cool, slice into six squares or rectangles, and get ready to serve.
Step 7: Enjoy with toppings
Serve your warm or cooled oat and chia slices with a dollop of coconut yoghurt, or drizzle extra maple syrup over the top for added indulgence.
Whether you snack on them straight away or save some for later in the week, these slices are a delicious way to stay energised on busy days.

Frequently Asked Questions
Can I use a different type of milk?
Yes. Feel free to substitute almond, soy, or oat milk if you’re looking for a dairy-free option.
Adjust the consistency as needed; if the batter seems too thick, a small splash more milk should help.
What if I don’t have almond meal?
You can skip almond meal or replace it with ground flaxseed or additional flour.
Keep an eye on the batter’s moisture level, as each alternative may alter the texture slightly.
Are fresh berries an option?
Absolutely. Fresh berries can be used in place of frozen.
Just keep in mind they might release more moisture while baking, so the slices may require an extra few minutes in the oven.
How should I store leftovers?
Once fully cooled, place any remaining slices in an airtight container and store in the fridge.
Reheat briefly in the microwave or enjoy them cold for a quick breakfast.
Can I freeze these slices?
Yes. Wrap individual slices in parchment or foil and freeze for up to three months.
Thaw them overnight in the fridge, then warm through in the oven or microwave when you’re ready to eat.

And that’s it for this Oat & Chia Slices recipe. You can find the whole thing on a handy recipe card just below, so be sure to Pin it for later!
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Oat & Chia Slices
Ingredients
- 1 banana
- 2 cups oats
- 1/2 cup chia seeds
- 1/4 cup almond meal
- 1 cup flour
- 500 ml milk
- 1/2 tsp vanilla extract
- 1 cup frozen berries
- 1/2 cup maple syrup Optional
Instructions
- Preheat the oven to 190 C
- Mash the banana in a big bowl
- Add all the dry ingredients and mix
- Add the wet ingredients and optional maple syrup for sweetened and set aside for 10 minutes
- Add the frozen fruit and fold in very briefly – 3-4 turns is plenty or the colour will bleed from the berries
- Add to a lined or greased baking tray and bake for 30-40 minutes
- Remove from the oven and leave to cool
- Serve with coconut yogurt and maple syrup