Banana bread overnight oats take the flavor of a classic banana bread loaf — ripe banana, warm cinnamon, a touch of sweetness — and turn it into a no-cook breakfast you prep the night before. There’s no actual bread in the jar; the name refers to the flavor, the same way “carrot cake oats” doesn’t contain cake. Rolled oats soak overnight in milk alongside mashed banana and chia seeds, softening into a thick, spoonable texture without any stovetop or oven time.
Why This Recipe Works
- A 1:1 ratio of oats to milk (by volume) is the standard starting point for overnight oats — enough liquid for the oats to fully soften, without turning soupy.
- Mashed ripe banana adds natural sweetness and body, so less added sweetener is needed.
- Chia seeds absorb extra liquid as they sit, helping the texture firm up further by morning.
Ingredient Notes Worth Knowing
The riper the banana, the better — one with heavy brown speckling mashes easily and is noticeably sweeter, which means you can use less maple syrup. Stick with rolled (old-fashioned) oats: quick oats can turn slightly gummy after a full night of soaking, and steel-cut oats stay too firm without actual cooking.
Make-Ahead and Serving
Build this directly in the jar or container you’ll eat from, so there’s nothing to clean in the morning beyond a spoon. It’s traditionally served straight from the fridge; warming it is optional. The mixture continues to thicken the longer it chills, so keep a splash of extra milk nearby to loosen it up before eating if it’s been sitting closer to 12 hours than 6.
This recipe is easy to adapt: use a plant-based milk for a dairy-free version, certified gluten-free oats if that’s a concern, or skip the walnuts for a nut-free jar.
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Banana Bread Overnight Oats
Description
A no-cook, make-ahead breakfast that tastes like banana bread in a jar. Ripe banana and cinnamon flavor a simple base of rolled oats and milk, thickened overnight with chia seeds into a creamy, spoonable bowl — just stir and refrigerate the night before.
Ingredients
Instructions
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Mash the banana. In a 350 ml (12 oz) jar or other airtight container, mash the banana with a fork until mostly smooth.
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Add everything else. Add the oats, milk, chia seeds, maple syrup, cinnamon, vanilla, and salt to the same jar.
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Stir well. Mix for about 30 seconds, scraping the bottom of the jar, until no dry oats are visible and everything looks evenly combined.
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Chill. Seal and refrigerate at 4°C (40°F) or below for at least 6 hours, or up to 12 hours overnight.
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Check for doneness. The oats are ready when the mixture is thick and holds its shape on a spoon rather than pooling like liquid. If it still looks watery after 6 hours, give it another 1–2 hours.
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Loosen if needed. If it's thickened more than you'd like, stir in an extra 1–2 teaspoons of milk just before eating.
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Top and serve. Add the chopped walnuts and extra banana slices if using. Traditionally served cold, straight from the fridge. If you prefer it warm (optional):
- Microwave: uncovered, 60–90 seconds on medium power, stirring halfway.
- Stovetop: in a small saucepan over low heat, 2–3 minutes, stirring often, just until heated through.
Nutrition Facts
Servings 1
- Amount Per Serving
- Calories 405kcal
- % Daily Value *
- Total Fat 13g20%
- Saturated Fat 3g15%
- Sodium 175mg8%
- Potassium 640mg19%
- Total Carbohydrate 61g21%
- Dietary Fiber 10g40%
- Sugars 22g
- Protein 14g29%
- Calcium 240 mg
- Iron 3 mg
* Percent Daily Values are based on a 2,000 calorie diet. Your daily value may be higher or lower depending on your calorie needs.
Note
Storage: For best quality, use within 3–4 days when continuously refrigerated at 40°F (4°C) or below. The 3–4 day period is a recommended refrigerated storage window, not a guarantee of safety. Discard if it develops an unusual odor, appearance, or texture — but note that a normal appearance or smell does not by itself guarantee the food is safe; when in doubt, throw it out. The optional banana-slice garnish is best added just before serving because it browns quickly.
Freezing: Not recommended — the mixture separates and turns watery once thawed, and the banana darkens noticeably.
Reheating: See Step 7. Add a splash of milk before reheating if the oats have thickened in the fridge.
Pro Tips:
- Use the ripest banana you have — it mashes easily and cuts down on added sweetener.
- Add walnuts on top rather than mixing them in, so they stay crunchy instead of softening overnight.
- For the best banana appearance across multiple jars, prepare each jar as written (banana mashed in before chilling), then add the optional fresh banana-slice garnish just before eating rather than in advance — the garnish is what browns fastest, not the mashed banana already mixed into the oats.
Common Mistakes:
- Using steel-cut oats — they won't soften fully without cooking.
- Skipping the salt — it's a small amount but noticeably balances the banana-cinnamon flavor.
- Not stirring thoroughly before chilling, which can leave dry oats at the bottom of the jar.
