These blueberry banana baked oatmeal cups are my go-to answer when mornings are chaotic but I still want something wholesome and satisfying. They come together with pantry basics, keep well, and travel without drama—perfect for lunchboxes, quick breakfasts, or a portable snack between meetings.

The texture sits between a soft muffin and a chewy oatmeal cookie: tender from ripe bananas, a little rich from almond butter, and studded with fresh blueberries. They don’t need added sugar—ripe bananas do most of the sweet work—so they’re a straightforward, everyday bake you can feel good about.

I make a batch nearly every week and tweak toppings depending on what’s in season. Below you’ll find the exact ingredient list and step-by-step bake method, followed by practical swaps, storage tips, and troubleshooting notes to make sure your first tray comes out perfectly.

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Ingredients

3 larger ripe bananas, mashed (about 1 ½ cups) — provide natural sweetness, moisture, and binding; use very ripe bananas for best flavor and texture.
½ cup unsweetened almond butter (or nut butter of choice) — adds creaminess, healthy fats, and structure; stir well if it’s separated.
2 large eggs (or 2 flax eggs for vegan*) — help bind the oats and give lift; flax eggs work but may yield a slightly denser cup.
½ cup non-dairy milk of choice — hydrates the oats; use almond, oat, soy, or your preferred non-dairy milk.
2 cups rolled oats — the base of the cups; old-fashioned rolled oats give the best texture (not instant).
¼ tsp sea salt — brightens flavor and balances the sweetness from bananas.
1 tsp ground cinnamon — warm spice that complements banana and blueberry.
½ cup fresh blueberries (+ more for topping***) — fresh berries hold their shape and give juicy bursts; fold gently to avoid too much bleeding.

The Method for Blueberry Banana Baked Oatmeal Cups

Preheat the oven to 350°F (175°C). Line a muffin pan with paper liners.
In a large bowl, mash 3 larger ripe bananas until mostly smooth (about 1 ½ cups mashed).
Add ½ cup unsweetened almond butter (or nut butter of choice) to the mashed bananas and stir until creamy and combined.
Add 2 large eggs (or 2 flax eggs, prepared in advance) and ½ cup non-dairy milk of choice; mix until the wet ingredients are evenly combined.
Add 2 cups rolled oats, 1 tsp ground cinnamon, and ¼ tsp sea salt to the bowl. Stir until the oats and spices are fully incorporated into the wet mixture.
Gently fold ½ cup fresh blueberries into the batter.
Spoon the batter into the prepared muffin pan, filling each cup most of the way up. If desired, top each cup with additional fresh blueberries.
Bake on the center oven rack for 30–35 minutes, or until the oatmeal cups are set and lightly golden on top (a toothpick inserted into the center should come out mostly clean).
Remove the pan from the oven and allow the oatmeal cups to cool completely in the pan before removing the liners and serving.

Short, practical tips while you bake

Line the muffin tin with sturdy paper liners—these cups are moist, and flimsy liners tear when you remove them warm. If you prefer a crisper edge, bake on a dark metal pan and give the tops a minute or two under the broiler on low, watching very closely. For a vegan version, make your flax eggs by whisking 2 tbsp ground flaxseed with 6 tbsp water and letting it sit for 5–10 minutes until gelatinous.

Why This Recipe Works

This recipe balances moisture, structure, and flavor in three simple parts: mashed bananas and almond butter create a creamy wet base; eggs (or flax eggs) and oats provide structure; and blueberries add freshness and brightness. Rolled oats absorb the wet ingredients without turning mushy, so the cups set into a tender but firm texture rather than a porridge.

Cinnamon and sea salt are small but important: cinnamon layers in warmth while salt amplifies the natural sweetness of the bananas and the blueberry tang. The almond butter contributes fat and mouthfeel without overpowering the other flavors.

Easy Ingredient Swaps

Nut butter — swap almond butter for peanut, cashew, or sunflower seed butter for a nut-free option.
Milk — any non-dairy milk works; if you use oat milk the result will be slightly sweeter and creamier.
Eggs — replace 2 large eggs with 2 flax eggs to keep the bake vegan; note the texture will be a touch denser.
Oats — stick with rolled oats. Quick oats will make the cups softer and less textured; steel-cut oats are not recommended without pre-cooking.
Blueberries — use frozen if necessary (don’t thaw first to avoid bleeding into the batter), keeping the same ½ cup measure.

Cook’s Kit

1 large mixing bowl — for combining the wet and dry ingredients.
Fork or potato masher — to mash bananas smoothly.
Spatula or wooden spoon — for folding oats and blueberries without overworking the batter.
Muffin pan — standard 12-cup works well; if you use mini or jumbo pans, adjust baking time.
Paper liners — recommended for easy removal and clean-up.
Measuring cups and spoons — to keep the ratios accurate.

Easy-to-Miss Gotchas

Don’t under-ripen the bananas. Slightly speckled to fully brown bananas are what give the cups sweetness and aroma. If the bananas are still too firm and pale, the cups will lack sweetness and might be drier.

Folding blueberries gently matters. Overmixing after adding berries turns the batter purple and can release extra juice, making the cups denser. Fold only until the berries are evenly distributed.

Let them cool completely before peeling liners. Warm cups are softer and more likely to stick or break when you try to remove the paper. Patience here pays off.

Seasonal Ingredient Swaps

Spring — swap blueberries for raspberries or chopped strawberries; gently fold them in as you would the blueberries.
Summer — use a mix of berries (blueberry, blackberry, raspberry) for a bright, jammy result.
Fall — fold in small diced apple and a pinch more cinnamon, or add ¼ tsp nutmeg for extra warmth.
Winter — swap fresh blueberries for thawed frozen cranberries mixed with a tablespoon of honey or maple syrup if you like them less tart.

Behind-the-Scenes Notes

Banana does triple duty here: it sweetens, binds, and contributes moisture. Almond butter brings fat and a nutty backbone that helps the cups keep their shape. Oats gelatinize as they absorb the wet ingredients; that gel traps air and gives the final texture a lift even without flour.

If you’re experimenting with scales, the batter should be thick but spoonable—similar to a thick pancake batter. Too runny means the cups may not set fully; too stiff and they’ll be dry. The 1 ½ cups mashed banana to 2 cups oats ratio is forgiving but don’t stray too far if you want the same result.

Best Ways to Store

Room temperature: Keep in an airtight container for up to 24 hours. They’re best within the first day if you plan to eat them without reheating.

Refrigerator: Store in an airtight container for up to 5 days. Reheat in the microwave for 20–30 seconds or warm in a 325°F oven for 5–8 minutes.

Freezer: Freeze cooled muffins in a single layer on a baking sheet, then transfer to a freezer bag for up to 3 months. Thaw overnight in the fridge or microwave from frozen for 45–60 seconds on medium power.

Questions People Ask

Can I make these gluten-free? — Yes, use certified gluten-free rolled oats to keep the recipe gluten-free.
Will frozen blueberries work? — Yes. Stir them in frozen to reduce color bleed. You may see a slightly moister crumb where frozen berries release juice.
Can I make them ahead? — Absolutely. Bake, cool, and refrigerate. Grab one cold or reheat for a minute for a fresh-baked feel.
How do I make them sweeter? — Use very ripe bananas, or add a tablespoon of maple syrup or honey to the wet mix if you want a touch more sweetness.
Can I double the recipe? — Yes. Use two muffin pans and stagger them in the oven if needed, swapping racks halfway through if your oven bakes unevenly.

Final Bite

These Blueberry Banana Baked Oatmeal Cups are a simple, reliable bake that fits into busy lives without fuss. The recipe uses pantry-friendly ingredients and tolerates small swaps, which makes it a great base for weekly meal prep. Once you try a warm one slathered with a little extra nut butter or plain yogurt, they’ll likely be as regular in your rotation as they are in mine.

If you bake a batch, tell me what swap you tried—I love hearing how you make this recipe your own. Happy baking.

Blueberry Banana Baked Oatmeal Cups

Baked oatmeal cups made with mashed bananas, almond butter, oats, and fresh blueberries — an easy breakfast or snack.

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Prep Time 5

Cook Time 30

Total Time 35

Course Breakfast

Servings 12 servings

Equipment

Muffin pan
Paper liners
Mixing Bowl
Spoon

Ingredients

3 largeripe bananasmashed about 1 1/2 cups
1/2 cupunsweetened almond butteror nut butter of choice
2 largeeggsor 2 flax eggs for vegan*
1/2 cupnon-dairy milk of choice**
2 cupsrolled oats
1/4 tspsea salt
1 tspground cinnamon
1/2 cupfresh blueberries+ more for topping***

Instructions

Preheat the oven to 350°F (175°C). Line a muffin pan with paper liners.
In a large bowl, mash 3 larger ripe bananas until mostly smooth (about 1 ½ cups mashed).
Add ½ cup unsweetened almond butter (or nut butter of choice) to the mashed bananas and stir until creamy and combined.
Add 2 large eggs (or 2 flax eggs, prepared in advance) and ½ cup non-dairy milk of choice; mix until the wet ingredients are evenly combined.
Add 2 cups rolled oats, 1 tsp ground cinnamon, and ¼ tsp sea salt to the bowl. Stir until the oats and spices are fully incorporated into the wet mixture.
Gently fold ½ cup fresh blueberries into the batter.
Spoon the batter into the prepared muffin pan, filling each cup most of the way up. If desired, top each cup with additional fresh blueberries.
Bake on the center oven rack for 30–35 minutes, or until the oatmeal cups are set and lightly golden on top (a toothpick inserted into the center should come out mostly clean).
Remove the pan from the oven and allow the oatmeal cups to cool completely in the pan before removing the liners and serving.

Notes

Notes
*Replace the eggs with two flax eggs to make this recipe egg-free and vegan. To do so, stir 2 tablespoons of ground flaxseed with 6 tablespoons of water in a mixing bowl. Allow this mixture to sit for 10 minutes, stirring occasionally, or until the mixture resembles the consistency of beaten eggs.
**I use full-fat canned coconut milk which brings a great deal of richness to the oatmeal cups, but soy milk, unsweetened almond milk, oat milk, or regular milk work great too.
***Replace the blueberries with chocolate chips if you’d like!
Store any leftovers in an airtight container in the refrigerator for up to 1 week. You can also easily freeze these! Simply transfer them to a ziplock bag and freeze for up to 2 months.

Blueberry Banana Baked Oatmeal Cups

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Ingredients