Blueberry Banana Oatmeal Bars

Featured in: Everyday Family Favorites

These chewy bars blend juicy blueberries, ripe bananas, and hearty oats with a touch of cinnamon and vanilla. Combining dry ingredients like rolled oats and baking powder with mashed bananas, honey, and eggs, the mixture is gently folded with fresh or frozen blueberries. Baked until golden, they offer a balanced texture that's perfect for quick, wholesome energy. Adaptable with protein powder or oat flour, they suit various dietary needs and can be enhanced with nuts for added crunch.

Updated on Mon, 22 Dec 2025 09:50:00 GMT
Freshly baked Blueberry Banana Oatmeal Protein Bars with glistening blueberries, ready to eat. Pin this
Freshly baked Blueberry Banana Oatmeal Protein Bars with glistening blueberries, ready to eat. | terracrumb.com

One Tuesday morning, I was standing in my kitchen with a banana situation on my hands—three perfectly ripe ones that were about to cross the line into brown-spotted territory. I had protein powder left over from a half-hearted smoothie phase, oats in the pantry, and a craving for something that felt like breakfast but tasted like a treat. That's when these bars were born, and honestly, they've been my answer to rushed mornings ever since.

I brought a batch to a potluck last summer, and my neighbor asked if I'd made them from scratch or bought them at some fancy bakery—that's when I knew I was onto something. The fact that she came back asking for the recipe while holding one in each hand told me these weren't just breakfast; they were conversation starters.

Ingredients

  • Rolled oats: The backbone of these bars; they create that satisfying chewiness and hold everything together without feeling heavy.
  • Vanilla protein powder: This isn't about becoming a gym person; it's about adding substance and keeping you energized without any weird aftertaste.
  • Ripe bananas: The sweeter and spottier, the better; they provide natural moisture and eliminate the need for excessive added sugars.
  • Honey or maple syrup: Just enough to make them taste like a treat without overwhelming the other flavors.
  • Fresh or frozen blueberries: Don't thaw frozen ones; they stay intact and won't turn your batter purple.
  • Eggs: They're the glue that holds everything together and adds richness without dairy.
  • Applesauce: A sneaky ingredient that keeps the bars moist and tender while reducing the need for excess oil.
  • Coconut oil or butter: Choose whichever you have on hand; both work beautifully here.
  • Cinnamon, salt, and baking powder: The quiet helpers that round out the flavors and give the bars lift.

Instructions

Set the stage:
Preheat your oven to 350°F and line your 8x8-inch pan with parchment paper, leaving edges that hang over the sides—this is your built-in handle for lifting the whole thing out later without it falling apart.
Build the dry base:
Whisk together the oats, protein powder, cinnamon, salt, and baking powder in a large bowl; this distributes the leavening and spices evenly so every bite tastes consistent.
Create the wet mixture:
Mash the bananas until they're mostly smooth (a few small lumps are fine), then add the honey, applesauce, eggs, vanilla, and melted coconut oil, whisking until it looks homogeneous and glossy.
Bring them together:
Pour the wet into the dry and stir until just combined—overmixing develops gluten in the oats and can make the bars tough, so stop as soon as you don't see dry streaks anymore.
Add the stars:
Gently fold in the blueberries with a spatula, keeping them whole and scattered throughout rather than crushed into the batter.
Bake with intention:
Spread the batter evenly in the pan and bake for 28–32 minutes; they're done when the top is golden and a toothpick comes out clean, though a tiny crumb or two is okay.
The hardest part:
Let them cool completely in the pan—this matters more than you'd think because they finish setting as they cool and become easier to cut cleanly.
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There's something quietly satisfying about wrapping one of these bars in foil and knowing you have a real breakfast waiting for you tomorrow morning. It transformed my relationship with mornings, turning them from chaotic scrambles into something I could actually look forward to.

Storage and Keeping Them Fresh

These bars live happily at room temperature for about three days, wrapped or in an airtight container, which is perfect for your work week. Refrigerate them for up to a week if you want them to last longer, and they'll stay just as chewy—some people actually prefer them cold, straight from the fridge on a hot morning.

Making Them Your Own

The beauty of this recipe is how flexible it is; I've added chopped nuts for crunch, swapped blueberries for raspberries when the farmers market had them, and once even added a handful of dark chocolate chips when I was feeling indulgent. You can skip the protein powder entirely and use oat flour instead if you prefer, and these bars work perfectly dairy-free when you use coconut oil and dairy-free protein powder.

The Bigger Picture

What started as a way to use up ripe bananas became my answer to the endless question of what to eat when you're rushed but want something substantial and real. These bars sit right in that sweet spot between homemade and convenient, wholesome and actually delicious.

  • Make a double batch on Sunday and you've solved breakfast for two weeks.
  • They're naturally sweet enough that you don't feel like you're eating health food, but nutritious enough that you actually are.
  • Keep a couple in your bag when you know your day is going to be hectic—they hold up beautifully and require no utensils.
Golden-brown Blueberry Banana Oatmeal Protein Bars, smelling of cinnamon and vanilla, offering a perfect snack. Pin this
Golden-brown Blueberry Banana Oatmeal Protein Bars, smelling of cinnamon and vanilla, offering a perfect snack. | terracrumb.com

These bars prove that breakfast doesn't have to be complicated to be nourishing, and that the best recipes are often the ones born from what you have on hand and what you actually want to eat. Once you make them once, they'll become your go-to answer too.

Recipe Questions

Can I use frozen blueberries in the bars?

Yes, frozen blueberries can be used directly without thawing to maintain texture and prevent excess moisture.

What can I substitute for protein powder?

Oat flour is a great alternative to protein powder for a less protein-focused variation without altering the texture.

How should I store the bars for freshness?

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

Is it possible to make these bars dairy-free?

Yes, use dairy-free protein powder and substitute butter with coconut oil to keep them dairy-free.

Can nuts or seeds be added for extra texture?

Certainly, adding 1/4 cup chopped nuts or seeds enhances crunchiness and adds variety in texture.

Blueberry Banana Oatmeal Bars

Wholesome bars combining blueberries, banana, oats, and protein for a nutritious, grab-and-go option.

Prep time
15 mins
Time to cook
30 mins
Time Required
45 mins
Created by Nora Whitfield


Skill Level Easy

Cuisine type American

Makes 12 Portions

Diet Info Meat-Free

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)

Directions

Step 01

Preheat Oven and Prepare Pan: Preheat oven to 350°F. Line an 8x8-inch baking pan with parchment paper, leaving overhang for 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, and melted coconut oil, then whisk until combined.

Step 04

Combine Wet and Dry Mixtures: Pour wet ingredients into dry ingredients and stir gently until just combined.

Step 05

Fold in Blueberries: Carefully fold in blueberries, avoiding overmixing, especially if using frozen berries.

Step 06

Transfer Batter to Pan: Spread the mixture evenly into the prepared baking pan.

Step 07

Bake Bars: Bake for 28 to 32 minutes until bars are golden and a toothpick inserted in the center comes out clean.

Step 08

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

Equipment Needed

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

Allergy Details

Review every item for possible allergens. Talk to your healthcare provider if unsure.
  • Contains eggs and potential allergens from protein powder including soy or nuts.
  • Possible coconut/tree nut allergen if coconut oil is used.
  • May contain dairy if butter or dairy-based protein powder is used.

Nutrition Details (per portion)

Details are for information. Always discuss dietary choices with your doctor.
  • Energy (cal): 135
  • Fats: 3.5 g
  • Carbohydrates: 22 g
  • Proteins: 6 g