Blueberry Banana Oatmeal Bars

Featured in: Home Kitchen Staples

These chewy bars combine juicy blueberries, ripe bananas, rolled oats, and a protein boost for a nutritious option. Easy to prepare and bake, they offer a wholesome grab-and-go solution suitable for breakfast or snacking. The mix of sweet fruit and hearty oats provides both flavor and sustained energy, while the protein powder enhances satiety. They bake up golden and slightly soft, perfect for a nourishing start or energizing break during the day.

Updated on Tue, 23 Dec 2025 12:28:00 GMT
Blueberry Banana Oatmeal Protein Bars, golden brown and chewy, perfect for a breakfast treat. Save
Blueberry Banana Oatmeal Protein Bars, golden brown and chewy, perfect for a breakfast treat. | cozymsemen.com

I discovered these bars on a rushed Tuesday morning when I'd overslept and had exactly seven minutes before heading out. My pantry held bananas that were too ripe to eat whole, a container of protein powder I'd been meaning to use, and a handful of frozen blueberries. What started as desperate breakfast improvisation became something I now make every Sunday—not because I have to, but because I genuinely want to. They're the kind of thing that tastes like you spent hours in the kitchen, even though they take less time than a shower.

I brought a batch to a friend's kitchen one Saturday and watched her teenage daughter reach for a third one before I'd even finished explaining what was in them. That moment—when someone stops reading the ingredient list and just eats because it tastes good—is when I knew this recipe had crossed from healthy breakfast into genuinely crave-worthy territory.

Ingredients

  • Old-fashioned rolled oats (2 cups): These create that essential chewiness; quick oats won't give you the same texture, and steel-cut are too chunky for bars.
  • Vanilla protein powder (1/2 cup): The unsung hero that keeps these filling past mid-morning—vanilla pairs quietly with everything without dominating.
  • Ripe bananas (2 large, mashed): Use bananas with brown spots; they're sweeter and bind better than pale ones, plus they smell amazing while mixing.
  • Fresh or frozen blueberries (1 cup): Frozen berries work beautifully here and won't bleed purple throughout the bars if you leave them frozen before folding in.
  • Honey or maple syrup (1/4 cup): Either works, though maple gives a subtler sweetness that doesn't compete with the fruit.
  • Unsweetened applesauce (1/4 cup): This keeps things moist without extra fat, and it's one of those quiet ingredients that nobody mentions but everyone notices when it's missing.
  • Large eggs (2): They're the structural glue here, so resist the urge to skimp or substitute carelessly.
  • Melted coconut oil or unsalted butter (2 tablespoons): Just enough fat for richness without the heaviness; coconut oil adds a whisper of tropical flavor.
  • Ground cinnamon (1/2 teaspoon): Enough to warm the whole thing without making it taste like you're eating a spice jar.
  • Baking powder (1 teaspoon): A gentle lift to keep these tender rather than dense.
  • Salt (1/4 teaspoon): Cuts through sweetness and makes everything taste more like itself.

Instructions

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Prepare your stage:
Preheat the oven to 350°F while you line your 8x8-inch pan with parchment, leaving extra hanging over the edges—this is the small gesture that makes pulling these out later effortless instead of frustrating.
Build the dry foundation:
Whisk together oats, protein powder, cinnamon, salt, and baking powder in a large bowl, making sure the powder distributes evenly so you don't bite into a pocket of pure vanilla flavor.
Combine the wet elements:
Mash bananas in another bowl until mostly smooth with just a few small pieces, then add honey, applesauce, eggs, vanilla, and melted oil, whisking until the mixture looks uniform and smells like banana bread's cheerful cousin.
Marry the two sides:
Pour wet into dry and stir gently until just combined—overmixing develops gluten and makes bars tough, so stop as soon as you don't see dry streaks of flour anymore.
Fold in the treasure:
Gently fold frozen blueberries into the batter, watching how they stay whole and plump because they're cold and firm, unlike thawed berries which would turn to mush.
Spread and smooth:
Pour batter into the prepared pan and use a spatula to spread it evenly, pressing gently into corners without compacting everything into a dense brick.
Bake until golden:
Bake for 28–32 minutes until the tops turn golden and a toothpick inserted in the center comes out clean or with a few moist crumbs but no wet batter. Start checking at 28 minutes because ovens vary.
Cool with patience:
Let the entire pan cool completely at room temperature—cutting warm bars results in crumbling, so this waiting period is non-negotiable despite how good they smell.
Cut and store:
Use the parchment overhang to lift the entire block onto a cutting board, then use a sharp knife to cut into 12 equal bars, wiping the blade between cuts for cleaner edges.
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My neighbor once told me these were the first thing she grabbed on mornings when everything felt overwhelming, because they required zero decisions and tasted like someone had taken care of her. That's when I realized food's real power isn't in impressing people—it's in showing up for them.

Storage and Shelf Life

These bars live a whole week in the refrigerator in an airtight container, or three days at room temperature if your kitchen stays cool. I've found they taste best consumed within five days, when the blueberries still taste fresh and the bars haven't started to compress under their own weight. After a week they're still edible but the texture loses some of that tender chew you're after.

Variations and Swaps

The beauty of this base is how forgiving it is to creative changes. I've swapped the blueberries for chopped strawberries, diced peaches, dried cranberries, or even chocolate chips depending on what the season offered or what I had thawing in the freezer. One winter I added 1/4 cup chopped pecans for crunch, and my whole household started requesting them that way permanently.

If protein powder doesn't fit your kitchen, substitute an equal amount of oat flour and they become lighter, more cake-like bars. For dairy-free eating, use coconut oil instead of butter and check your protein powder label. Maple syrup swaps in seamlessly for honey without changing anything else.

Why This Works as Breakfast

These bars actually stick with you through morning because of the protein, fiber, and natural sugars working together—it's not empty calories. The banana provides quick energy, the oats and protein keep hunger at bay, and the blueberries add antioxidants that make you feel like you're doing something right for your body. I've stopped feeling guilty eating these for breakfast, which somehow makes them taste even better.

  • Pack one into a bag the night before and your morning becomes infinitely simpler.
  • They pair beautifully with coffee, herbal tea, or even a cold glass of milk.
  • Make a double batch on Sunday and you've solved Monday through Wednesday breakfast completely.
Fresh blueberries dot the top of these homemade Blueberry Banana Oatmeal Protein Bars, ready to eat. Save
Fresh blueberries dot the top of these homemade Blueberry Banana Oatmeal Protein Bars, ready to eat. | cozymsemen.com

These bars became my answer to mornings when good intentions matter more than perfection. They ask very little of you and deliver something genuinely good in return.

Recipe FAQs

Can I use frozen blueberries for these bars?

Yes, frozen blueberries can be used directly without thawing to prevent the batter from becoming too wet.

What can I substitute for protein powder?

Oat flour is a great alternative that maintains texture without adding protein powder.

How should I store the bars?

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

Can I make these bars dairy-free?

Use dairy-free protein powder and coconut oil instead of butter or dairy-based ingredients to keep them dairy-free.

Can I add nuts or seeds for extra texture?

Yes, adding 1/4 cup of chopped nuts or seeds adds a pleasant crunch and nutritional value.

Blueberry Banana Oatmeal Bars

Chewy bars rich in blueberries, banana, oats, and protein, ideal for a healthy snack.

Prep Time
15 min
Time to Cook
30 min
Total Duration
45 min
By Cozy Msemen Daniel Crawford


Skill Level Easy

Cuisine American

Output 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 (do not thaw if frozen)

How-To Steps

Step 01

Preheat 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: Whisk rolled oats, protein powder, ground cinnamon, salt, and baking powder together in a large bowl.

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 or butter; whisk until fully combined.

Step 04

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

Step 05

Add Blueberries: Fold in blueberries carefully to avoid breaking them, especially if they are frozen.

Step 06

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

Step 07

Cool and Slice: Allow bars to cool completely in the pan before lifting out using parchment overhang and cutting into 12 portions.

Tools Needed

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

Allergy Details

Please check every ingredient for allergens and reach out to your healthcare provider with concerns.
  • Contains eggs, tree nuts/coconut (if coconut oil used), and dairy (if butter or dairy-based protein powder used).
  • Protein powders may contain soy or nut traces; verify allergen information on packaging.

Nutrition Info (per serving)

Nutritional info is an estimate. Cozy Msemen recommends asking a professional about your needs.
  • Calories: 135
  • Fats: 3.5 g
  • Carbohydrates: 22 g
  • Proteins: 6 g