Blueberry Banana Oatmeal Bars

Featured in: Rustic Fruit Bakes

These chewy bars combine ripe bananas, juicy blueberries, and hearty oats enhanced with a boost of protein. Easy to prepare and baked to golden perfection, they offer a wholesome and energizing option for breakfast or snacks. Natural sweetness from honey or maple syrup complements the flavors, while the texture remains moist and satisfying. Suitable for vegetarian diets and adaptable with dairy-free or nut variations.

Updated on Mon, 22 Dec 2025 11:26:00 GMT
Golden Blueberry Banana Oatmeal Protein Bars, filled with juicy blueberries, ready to eat and enjoy for breakfast. Pin
Golden Blueberry Banana Oatmeal Protein Bars, filled with juicy blueberries, ready to eat and enjoy for breakfast. | orchardcrust.com

I started making these bars on Sunday nights when meal prep felt like a chore I kept putting off. The smell of warm banana and cinnamon baking would fill the kitchen, and suddenly I felt like I was doing something kind for my future self. They turned into my favorite thing to wrap in foil and toss in my bag before running out the door. There's something comforting about grabbing breakfast that actually tastes like I cared enough to make it.

I made a batch the morning my friend came over to study, and she ate three bars before noon. She kept saying they tasted like something her mom would make, which is maybe the best compliment food can get. We sat at the kitchen table with our laptops open and these bars on a plate between us, and it felt easy. I've made them a dozen times since then, always thinking about that quiet morning.

Ingredients

  • Old-fashioned rolled oats: They give the bars structure and chew, and I've learned not to substitute quick oats because they turn mushy.
  • Vanilla protein powder: This is what makes them filling enough to count as breakfast, and the vanilla flavor blends in so you don't taste anything chalky.
  • Ground cinnamon: Just enough to make the kitchen smell cozy without overpowering the fruit.
  • Baking powder: It gives a little lift so the bars aren't dense, though they're still hearty.
  • Ripe bananas: The riper the better, those brown-spotted ones work magic as a natural sweetener and binder.
  • Honey or pure maple syrup: I usually use whatever I have open, both add a soft sweetness that doesn't feel too sugary.
  • Unsweetened applesauce: Keeps everything moist without adding oil or butter, and you don't taste it at all.
  • Eggs: They hold the whole thing together, I tried flax eggs once and they fell apart.
  • Pure vanilla extract: A teaspoon goes a long way in making these taste homemade.
  • Melted coconut oil or unsalted butter: I prefer coconut oil because it makes them dairy-free, but butter gives a richer flavor if that's your thing.
  • Fresh or frozen blueberries: Frozen ones are easier because you don't have to worry about them going bad, and they bleed less if you don't thaw them first.

Instructions

Prep your pan:
Preheat the oven to 350°F and line an 8x8-inch pan with parchment paper, letting the edges hang over so you can lift the whole thing out later. This step saves so much frustration when it's time to cut them.
Mix the dry ingredients:
Whisk together the oats, protein powder, cinnamon, salt, and baking powder in a large bowl until everything looks evenly distributed. It only takes a minute but makes sure you don't get pockets of baking powder.
Prepare the wet ingredients:
Mash the bananas in another bowl until they're smooth with just a few lumps, then whisk in the honey, applesauce, eggs, vanilla, and melted coconut oil. The mixture should look a little shiny and smell sweet.
Combine everything:
Pour the wet ingredients into the dry and stir gently until just combined, it's okay if it looks a bit lumpy. Overmixing makes the bars tough, so stop as soon as you don't see dry oats anymore.
Fold in the blueberries:
Add the blueberries and fold them in carefully, especially if they're frozen because they can break and turn the batter purple. I've done that before and it still tastes fine, just looks a little messy.
Spread and bake:
Spread the batter evenly in the pan and smooth the top with a spatula, then bake for 28 to 32 minutes until the edges are golden and a toothpick comes out clean. Let them cool completely in the pan before cutting, or they'll crumble.
Freshly baked Blueberry Banana Oatmeal Protein Bars, described as chewy and packed with fruit and protein. Pin
Freshly baked Blueberry Banana Oatmeal Protein Bars, described as chewy and packed with fruit and protein. | orchardcrust.com

The first time I packed these for a long drive, I realized they're the kind of food that makes being prepared feel effortless. I ate one at a rest stop with bad coffee and it still tasted like care, like I'd done something right. Now I make them whenever I know the week ahead is going to be rushed, and it feels like a small way of taking care of myself when I won't have time to think about it.

How to Store and Reheat

I keep mine in an airtight container on the counter for up to three days, or in the fridge if I want them to last a week. They're great cold straight from the fridge, but if you want them warm, just microwave one for 15 seconds and it tastes freshly baked. I've also frozen them individually wrapped in foil, and they thaw in about an hour at room temperature or overnight in the fridge.

Swaps and Substitutions

If you don't have protein powder, you can use oat flour instead, though they won't keep you as full for as long. I've also swapped the blueberries for raspberries or chopped strawberries, and both worked beautifully. For a nut-free version, skip the coconut oil and use melted butter or more applesauce, and make sure your protein powder doesn't contain almond or peanut flour.

Serving Suggestions

I usually eat these plain with coffee, but they're also really good with a smear of almond butter or a dollop of Greek yogurt on the side. Sometimes I'll crumble one over a bowl of yogurt and berries for a lazy breakfast that feels more like a parfait. They also travel well in lunchboxes or gym bags, and they don't get soggy or fall apart.

  • Drizzle with a little extra honey or maple syrup if you want them sweeter.
  • Pair with a smoothie or a handful of nuts for a more filling breakfast.
  • Pack them for road trips or early morning flights, they're way better than airport food.
A close-up of delicious Blueberry Banana Oatmeal Protein Bars, a healthy grab-and-go option. Pin
A close-up of delicious Blueberry Banana Oatmeal Protein Bars, a healthy grab-and-go option. | orchardcrust.com

These bars have become the thing I make when I want to feel like I have my life together, even when I don't. They're simple, forgiving, and they always turn out right.

Recipe Q&A

Can I use frozen blueberries?

Yes, you can fold in frozen blueberries directly into the mixture without thawing to maintain their shape and freshness during baking.

How do I store the bars?

Store the bars in an airtight container at room temperature for up to 3 days or refrigerate for up to a week to keep them fresh.

Can I substitute protein powder?

Protein powder can be replaced with oat flour for a similar texture without the added protein content.

Are these bars suitable for dairy-free diets?

Yes, by using dairy-free protein powder and coconut oil instead of butter, you can make the bars dairy-free.

Can I add nuts or seeds?

Adding chopped nuts or seeds is a great way to add extra crunch and nutrition to the bars.

Blueberry Banana Oatmeal Bars

Chewy bars with blueberries, banana, oats, and protein, ideal for nutritious on-the-go mornings.

Prep time
15 min
Cook time
30 min
Overall time
45 min
Created by Ruby Hensley


Skill Level Easy

Cuisine American

Makes 12 Portions

Dietary Info Vegetarian

What You Need

Dry Ingredients

01 2 cups old-fashioned rolled oats
02 1/2 cup vanilla protein powder
03 1/2 teaspoon ground cinnamon
04 1/4 teaspoon salt
05 1 teaspoon baking powder

Wet Ingredients

01 2 large ripe bananas, mashed
02 1/4 cup honey or pure maple syrup
03 1/4 cup unsweetened applesauce
04 2 large eggs
05 1 teaspoon pure vanilla extract
06 2 tablespoons melted coconut oil or unsalted butter

Mix-Ins

01 1 cup fresh or frozen blueberries (if frozen, do not thaw)

Steps

Step 01

Preheat Oven and Prepare Pan: Preheat oven to 350°F. Line an 8x8-inch baking pan with parchment paper, leaving an overhang for easy removal.

Step 02

Combine Dry Ingredients: In a large bowl, whisk together rolled oats, protein powder, cinnamon, salt, and baking powder.

Step 03

Mix Wet Ingredients: In a separate bowl, mash bananas until smooth. Add honey or maple syrup, applesauce, eggs, vanilla extract, and melted coconut oil, then whisk until well combined.

Step 04

Combine Wet and Dry Mixtures: Pour wet ingredients into dry ingredients and stir until just combined without overmixing.

Step 05

Add Blueberries: Gently fold in blueberries, taking care not to overmix, especially if using frozen berries.

Step 06

Bake Bars: Spread batter evenly into the prepared pan and bake for 28 to 32 minutes, or until bars turn golden and a toothpick inserted in the center comes out clean.

Step 07

Cool and Cut: Allow to cool completely in the pan, then lift out using parchment overhang and cut into 12 bars.

Needed Tools

  • Mixing bowls
  • Whisk
  • Spatula
  • 8x8-inch baking pan
  • Parchment paper
  • Measuring cups and spoons

Allergen Warnings

Read ingredient labels to spot allergens. If unsure, consult your doctor or a specialist.
  • Contains eggs, tree nuts/coconut if coconut oil is used, and dairy if butter or dairy-based protein powder is utilized.
  • Protein powders may contain soy or traces of nuts; verify product labels for allergen information.

Nutrition Details (for each serving)

These figures are intended for reference—not as a substitute for medical guidance.
  • Calorie Count: 135
  • Fats: 3.5 g
  • Carbohydrates: 22 g
  • Proteins: 6 g