Blueberry Banana Oatmeal Bars

Featured in: Weekend Mint-Touched Treats

These chewy bars blend ripe bananas, juicy blueberries, rolled oats, and a protein boost for a nourishing and energizing treat. With simple ingredients and easy preparation, they bake to golden perfection, offering a balanced mix of sweetness and texture. Ideal for breakfast or a quick anytime snack, they provide a wholesome way to stay fueled through the day. Variations include dairy-free and nutty additions, stored well at room temperature or refrigerated.

Updated on Tue, 23 Dec 2025 14:12:00 GMT
Golden-brown blueberry banana oatmeal protein bars, a healthy breakfast or snack, ready to enjoy. Save
Golden-brown blueberry banana oatmeal protein bars, a healthy breakfast or snack, ready to enjoy. | rusticmint.com

One Tuesday morning, I stood in my kitchen staring at a half-dozen overripe bananas on the counter, their peels spotted brown and threatening to turn to mush. My daughter had asked for something she could grab before soccer practice, something that didn't taste like guilt. These bars were born from that moment—when I realized that breakfast didn't have to be complicated to be nourishing, and that sometimes the best recipes come from trying to rescue what you almost threw away.

I tested these bars for a camping trip with friends, and watching people bite into something I'd made while sitting by the fire, no apologies about it being "just a protein bar"—that's when I knew they were keepers. One friend asked for the recipe before we even broke camp, which felt like the highest compliment I could get.

Ingredients

  • Old-fashioned rolled oats (2 cups): They give these bars their chewy, satisfying texture and keep you grounded through the morning.
  • Vanilla protein powder (1/2 cup): This is what transforms breakfast bars into something that actually keeps hunger at bay—choose one you genuinely like the taste of, because it matters.
  • Ground cinnamon (1/2 teaspoon): A whisper of warmth that makes people ask what makes these taste so good.
  • Salt (1/4 teaspoon): This tiny amount is the secret that makes everything else pop.
  • Baking powder (1 teaspoon): Just enough to give the bars a tender crumb instead of a dense brick.
  • Ripe bananas, mashed (2 large): They should be spotted and soft—that's when they're sweetest and easiest to work with.
  • Honey or maple syrup (1/4 cup): Your choice here depends on what you have and what mood you're in; I use honey most days but reach for maple on mornings that feel like autumn.
  • Unsweetened applesauce (1/4 cup): This keeps the bars moist without adding heaviness, a trick I learned from years of trying to keep baked goods from drying out.
  • Large eggs (2): Room temperature if you remember, but honestly they work either way.
  • Pure vanilla extract (1 teaspoon): Real vanilla makes a difference you can taste.
  • Melted coconut oil or unsalted butter (2 tablespoons): This adds richness; coconut oil keeps them dairy-free if that matters to you.
  • Fresh or frozen blueberries (1 cup): If frozen, leave them as they are—thawing them releases juice that can turn your batter purple and damp.

Instructions

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Preheat and prepare:
Set your oven to 350°F and line your 8x8-inch pan with parchment paper, letting it drape over the edges like you're wrapping a present. You'll thank yourself when you're lifting these bars out whole.
Combine the dry base:
In a large bowl, whisk together oats, protein powder, cinnamon, salt, and baking powder until everything is evenly distributed. This takes about a minute and sets up your foundation.
Create the wet mixture:
In another bowl, mash your bananas until they're mostly smooth with just a few small lumps left. Add honey, applesauce, eggs, vanilla, and melted coconut oil, then whisk until it looks like a thick, unified batter.
Bring it together:
Pour the wet mixture into the dry ingredients and stir gently until just combined. You want to avoid overmixing, which would make these tough instead of chewy.
Fold in the blueberries:
With a spatula, gently fold the blueberries into the batter, turning it over a few times until they're scattered throughout. If you're using frozen berries, be especially gentle so they don't crush and release their color everywhere.
Spread and bake:
Pour the batter into your prepared pan and smooth it into an even layer with your spatula. Bake for 28 to 32 minutes, until the top is golden and a toothpick inserted in the center comes out clean or with just a few moist crumbs clinging to it.
Cool and cut:
Let the bars cool completely in the pan—this patience step is important because they'll be fragile while warm. Once cooled, lift them out using the parchment overhang and cut into 12 bars.
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There's something deeply satisfying about wrapping a bar in foil and knowing that tomorrow morning, when everything feels rushed, breakfast is already solved. These bars have become part of my week in a quiet way, the kind of routine that holds everything together.

Why This Works for Real Life

Most protein bars taste like cardboard wrapped in plastic, but these taste like someone actually made them in a kitchen, not a factory. The blueberries stay real and juicy, the banana keeps everything naturally tender, and the protein powder doesn't dominate—it just does its job in the background. They're proof that food for your body doesn't have to taste like punishment.

Flexibility and Swaps

If protein powder isn't your thing, swap it for oat flour in equal amounts—you'll lose some of the protein kick but keep all the chewiness. For dairy-free versions, use coconut oil and make sure your protein powder doesn't contain milk. I've also added chopped almonds and sunflower seeds when I wanted texture, and the bars shrugged it all off gracefully.

Storage and Keeping

These bars live happily at room temperature for three days in an airtight container, which is about how long they last in my house before everyone eats them. Refrigerating them for up to a week makes them slightly firmer and easier to grab, which some people prefer.

  • Keep them in an airtight container so they don't dry out or absorb flavors from your fridge.
  • Frozen bars thaw quickly and are surprisingly good straight from the freezer if you like things cold.
  • Make a double batch on Sunday and you'll have breakfast sorted for half the week.
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Fresh blueberries dot the top of these soft, chewy blueberry banana oatmeal protein bars, a delicious treat. Save
Fresh blueberries dot the top of these soft, chewy blueberry banana oatmeal protein bars, a delicious treat. | rusticmint.com

These bars have a way of making mornings feel a little gentler, like you're taking care of yourself even when you barely have time to think. That's the whole point.

Common Questions

Can frozen blueberries be used?

Yes, frozen blueberries may be used without thawing to keep the batter from becoming too wet.

How can the bars be made dairy-free?

Use coconut oil instead of butter and plant-based protein powder to ensure a dairy-free version.

Can the protein powder be substituted?

Oat flour can replace protein powder if a non-protein option is preferred, keeping the texture similar.

What is the best way to store these bars?

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

Are nuts or seeds suitable additions?

Chopped nuts or seeds can be added for extra crunch and texture without altering the core flavors.

What baking pan size should be used?

An 8x8-inch (20x20 cm) pan lined with parchment paper ensures even baking and easy removal.

Blueberry Banana Oatmeal Bars

Wholesome bars combining blueberries, banana, oats, and protein for a chewy, energizing snack.

Prep Duration
15 minutes
Time to Cook
30 minutes
All Steps Time
45 minutes
Created by Benjamin Thomas


Skill Level Easy

Tradition American

Makes 12 Portions

Nutrition Info Vegetarian-Friendly

What You'll 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 (do not thaw if frozen)

Method

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 oats, protein powder, cinnamon, salt, and baking powder.

Step 03

Mix wet ingredients: In a separate bowl, mash bananas and add honey or maple syrup, applesauce, eggs, vanilla extract, and melted coconut oil. Whisk until smooth.

Step 04

Incorporate wet into dry: Pour wet mixture into dry ingredients and stir until just combined.

Step 05

Fold in blueberries: Gently fold in blueberries, taking care not to overmix, especially if berries are frozen.

Step 06

Transfer batter to pan: Spread the batter evenly in the prepared baking pan.

Step 07

Bake bars: Bake for 28 to 32 minutes or until golden and a toothpick inserted centrally comes out clean.

Step 08

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

Tools Needed

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

Allergy Notes

Look over every ingredient for allergens, and reach out to your doctor if you're unsure.
  • Contains eggs and tree nuts/coconut if coconut oil is used; may contain dairy and soy depending on protein powder.

Nutrition Breakdown (each portion)

Provided as a general guide by Rustic Mint—always speak with your doctor for dietary help.
  • Energy (Kcal): 135
  • Lipids: 3.5 g
  • Carbohydrates: 22 g
  • Proteins: 6 g