Baked Oatmeal Bars with Banana

Featured in: Baked Goods & Sweet Treats

These wholesome oatmeal bars combine mashed ripe bananas with rolled oats, pure maple syrup, and a touch of vanilla for a naturally sweet breakfast or snack. The batter comes together in just 5 minutes using simple pantry staples, then bakes into soft, chewy bars that hold their shape perfectly.

What makes these bars special is their freezer-friendly nature and incredible versatility. Add chocolate chips, chopped nuts, dried fruit, or seeds to customize the flavor and texture. They're naturally dairy-free and can be made gluten-free with certified oats.

The technique of letting the bars rest in the cooling oven for 5 minutes ensures perfectly set edges and a tender center. Store in the refrigerator for up to 4 days or freeze for months, making them ideal for busy mornings or after-school snacks.

Updated on Sat, 07 Feb 2026 13:12:00 GMT
Chewy baked oatmeal bars packed with ripe bananas, warm from the oven and ready for a quick breakfast. Save
Chewy baked oatmeal bars packed with ripe bananas, warm from the oven and ready for a quick breakfast. | aeroflavor.com

My kitchen counter was covered in speckled bananas last Tuesday, the kind that sit just a little too long and develop those sweet spots that make banana bread sing. Instead of reaching for my usual loaf pan, I decided to try something different and ended up with these oatmeal bars that have become my go-to breakfast ever since. There's something deeply satisfying about turning what feels like kitchen neglect into something intentional and nourishing.

Last month my sister grabbed one on her way out the door and texted me three hours later asking for the recipe, which is basically the highest compliment I can imagine. Since then, I've started doubling the batch because somehow they always disappear faster than expected, whether from my own midnight snacking or family members who pretend they're just trying one.

Ingredients

  • 2 cups rolled oats: The foundation of these bars and what gives them that satisfying chewy texture
  • 1/2 tsp salt: Balances the sweetness and enhances the natural flavor of the oats
  • 1 1/3 cups mashed ripe banana: About 3 medium bananas provides natural sweetness, moisture, and helps bind everything together
  • 6 tbsp water: Creates the right consistency without adding extra fat or calories
  • 3 tbsp pure maple syrup, agave, or honey: Just enough sweetness to make these feel like a treat without being overpowering
  • 3 tbsp oil, nut butter, or additional water: Add richness or keep it lighter depending on your preference
  • 1 tsp pure vanilla extract: Deepens the flavor and makes everything taste more intentional
  • 1/3 cup chocolate chips, chopped nuts, dried fruit, or seeds: Optional but highly recommended for texture and excitement in every bite

Instructions

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Preheat your oven:
Set it to 350°F (175°C) and line an 8-inch square baking pan with parchment paper or grease it thoroughly
Combine the dry ingredients:
Mix the rolled oats and salt in a large bowl until evenly distributed
Add the wet ingredients:
Pour in the mashed banana, water, sweetener, oil or nut butter, and vanilla extract, stirring until everything comes together
Fold in your mix-ins:
Gently incorporate chocolate chips, nuts, dried fruit, or seeds if using them
Spread and bake:
Transfer mixture to prepared pan, smooth top, and bake for 20 minutes
Let them set:
Turn off oven and leave bars inside for 5 more minutes without opening the door
Cool and slice:
Allow to cool completely before cutting into 6-9 bars for clean edges
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Golden-brown oatmeal bars studded with chocolate chips, resting on a wire rack for a delicious snack. | aeroflavor.com

These bars have saved me on so many rushed mornings, wrapped in parchment and grabbed on the way to work, still slightly cold from the fridge. My friend started keeping a batch in her freezer for her kids' after-school snacks and said it revolutionized her afternoon routine.

Make Them Your Own

I love swapping mashed sweet potato or pumpkin puree for banana when I want something earthier and more autumnal. The technique stays exactly the same, but the flavor profile shifts completely, which keeps these bars interesting throughout the year.

Storage Solutions

These bars freeze beautifully and actually develop a more fudge-like texture after thawing, which some people prefer. I wrap individual portions in parchment and store them in a freezer bag, then just grab one the night before I want it.

Serving Suggestions

Sometimes I crumble a cold bar over Greek yogurt with fresh berries for a parfait situation that feels incredibly fancy but takes thirty seconds. Other mornings I toast one for a few minutes until the edges get crisp and spread almond butter over the warm center.

  • Try spreading them with nut butter or topping with yogurt for extra protein
  • Warm a bar in the microwave for 20 seconds for that fresh-baked feeling
  • Crumble over oatmeal or overnight oats for texture contrast
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Sliceable oatmeal bars on a white plate, showing a soft texture perfect with a smear of peanut butter. | aeroflavor.com

These humble oatmeal bars started as a way to use up overripe bananas and somehow became one of the most reliable recipes in my collection.

Recipe FAQs

Can I make these baked oatmeal bars ahead of time?

Absolutely. These bars store beautifully in an airtight container in the refrigerator for up to 4 days. For longer storage, wrap individual bars in plastic wrap and freeze for up to 3 months. Thaw overnight in the refrigerator or warm in the microwave for 30 seconds.

What can I substitute for the mashed banana?

Unsweetened applesauce or pumpkin purée works perfectly as a 1:1 substitute for mashed banana. Both provide moisture and natural sweetness while maintaining the soft, chewy texture. Keep in mind that pumpkin will add a subtle earthy flavor, while applesauce is more neutral.

How do I know when the oatmeal bars are done baking?

The bars are ready when the edges are lightly golden and the center appears set but still slightly soft to the touch. They will continue cooking as they rest in the closed oven for those additional 5 minutes, which is crucial for achieving the perfect texture without drying out.

Can I add protein powder to these oatmeal bars?

Yes, simply reduce the rolled oats by about 1/4 cup and add one scoop of your favorite protein powder to the dry ingredients. You may need to add an extra tablespoon of water to maintain the proper batter consistency, as protein powder can absorb more liquid than oats.

What's the best way to cut these bars without crumbling?

Let the bars cool completely before slicing—this is essential for clean cuts. Use a sharp knife and wipe it clean between cuts. For even portions, score the top lightly first to mark your lines, then press down firmly rather than using a sawing motion.

Are these bars suitable for school lunches?

These bars are ideal for school lunches since they're nut-free when made with oil instead of nut butter. They hold up well at room temperature for several hours and don't require refrigeration until the end of the day. Their soft texture makes them easy to eat, and they provide lasting energy.

Baked Oatmeal Bars with Banana

Soft, chewy oatmeal bars made with ripe banana, maple syrup, and oats. Ready in 25 minutes and perfect for meal prep.

Prep Time
5 min
Time to Cook
20 min
Full Time
25 min
Created by Mason Hughes


Skill Level Easy

Cuisine American

Makes 9 Portions

Dietary Info Vegetarian, No Dairy

What You'll Need

Dry Ingredients

01 2 cups rolled oats
02 1/2 tsp salt

Wet Ingredients

01 1 1/3 cups mashed ripe banana (about 3 medium bananas)
02 6 tbsp water
03 3 tbsp pure maple syrup, agave, or honey, or stevia equivalent
04 3 tbsp oil (such as coconut, vegetable), nut butter, or additional water
05 1 tsp pure vanilla extract

Optional Mix-Ins

01 1/3 cup chocolate chips, chopped nuts, dried fruit, or seeds

How To

Step 01

Prepare the Oven and Pan: Preheat your oven to 350°F. Line an 8-inch square baking pan with parchment paper or grease thoroughly with cooking spray.

Step 02

Combine Dry Ingredients: In a large mixing bowl, add the rolled oats and salt. Whisk briefly to distribute the salt evenly throughout the oats.

Step 03

Mix Wet Ingredients: Add the mashed banana, water, maple syrup (or chosen sweetener), oil (or nut butter or extra water), and vanilla extract to the bowl. Stir until completely combined and the oats are evenly coated.

Step 04

Add Optional Mix-Ins: Gently fold in any desired mix-ins such as chocolate chips, chopped nuts, dried fruit, or seeds until evenly distributed throughout the batter.

Step 05

Transfer to Baking Pan: Pour the mixture into the prepared baking pan. Use a spatula to spread the batter evenly and smooth the top surface. Sprinkle additional chocolate chips or nuts on top if desired.

Step 06

Bake the Bars: Bake for 20 minutes. Turn off the oven and keep the door closed, allowing the bars to remain inside for an additional 5 minutes to set completely.

Step 07

Cool and Slice: Remove the pan from the oven and let the bars cool completely in the pan. Once cooled, slice into 6 to 9 bars depending on desired portion size.

Step 08

Store: Store leftovers in an airtight container in the refrigerator for up to 4 days or freeze in a freezer-safe container for up to 3 months.

Tools Needed

  • 8-inch square baking pan
  • Large mixing bowl
  • Spatula or spoon
  • Measuring cups and spoons
  • Parchment paper

Allergy Details

Always check every ingredient for allergens. Ask your healthcare provider if you aren't sure.
  • Contains oats (check for gluten-free certification if needed)
  • May contain nuts if nut butter or nuts are used
  • Honey is not vegan; use maple syrup or agave for vegan option
  • Always check ingredient labels for allergens if unsure

Nutrition Details (each serving)

For informational use only, this doesn't replace professional medical guidance.
  • Calorie Count: 125
  • Total Fat: 3.5 g
  • Carbohydrates: 23 g
  • Proteins: 2.5 g