Baked Oatmeal Bars

Featured in: Baking & Sweet Treats

These soft and chewy banana oatmeal bars come together in just 25 minutes with simple pantry ingredients. The naturally sweetened bars use mashed ripe bananas as the base, combined with rolled oats, pure maple syrup, and vanilla for a wholesome treat.

What makes these bars special is their versatility - customize with chocolate chips, nuts, dried fruit, or seeds to suit your taste. They bake in 20 minutes and set perfectly with a simple oven-resting technique.

Store them in the refrigerator for up to 4 days or freeze for 3 months, making them ideal for busy mornings. Serve warm with yogurt or nut butter, or enjoy cold for a quick grab-and-go option.

Updated on Sat, 07 Feb 2026 11:23:00 GMT
Homemade baked oatmeal bars with banana and chocolate chips on a wooden board. Pin it
Homemade baked oatmeal bars with banana and chocolate chips on a wooden board. | vectorbaker.com

Last winter I found myself with three spotted bananas on the counter and zero ambition for banana bread. These oatmeal bars happened almost by accident, and now they are my go-to when I need something wholesome that feels like a treat.

My sister popped over one morning while a batch was cooling. She ate two bars standing at the counter, then asked for the recipe before even putting on her coat. That is when I knew these were special.

Ingredients

  • 2 cups rolled oats: Use old-fashioned oats here rather than quick oats for better texture and structure
  • 1/2 tsp salt: Just enough to make the banana sweetness pop without tasting salty
  • 1 1/3 cups mashed ripe banana: About three medium bananas with plenty of brown spots for natural sweetness
  • 6 tbsp water: Helps create the right consistency without needing excess oil or sweetener
  • 3 tbsp pure maple syrup: Agave or honey work too, or stevia if you are watching sugar
  • 3 tbsp oil or nut butter: Coconut oil adds subtle flavor while nut butter brings extra protein
  • 1 tsp pure vanilla extract: Do not skip this, it ties all the flavors together beautifully
  • 1/3 cup mix-ins: Chocolate chips make them feel decadent but nuts and dried fruit are lovely too

Instructions

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Preheat and prep your pan:
Heat your oven to 350°F and line an 8-inch square pan with parchment paper for easy removal
Combine the dry ingredients:
Whisk together the rolled oats and salt in a large mixing bowl to distribute everything evenly
Mix in the wet ingredients:
Add the mashed banana, water, sweetener, oil or nut butter, and vanilla then stir until fully incorporated
Add your mix-ins:
Gently fold in chocolate chips, nuts, dried fruit, or seeds if you are using them
Spread and bake:
Pour the mixture into your prepared pan, smooth the top, and bake for 20 minutes
Let them set:
Turn off the oven and leave the bars inside for 5 more minutes without opening the door
Cool completely:
Let the bars cool fully before slicing into 6 to 9 pieces for the cleanest cuts
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Soft, chewy baked oatmeal bars with banana and maple syrup on a plate. Pin it
Soft, chewy baked oatmeal bars with banana and maple syrup on a plate. | vectorbaker.com

These have become my Sunday baking ritual. The whole house smells like bananas and vanilla, and knowing I have breakfast sorted for the week feels like a small victory.

Customization Ideas

I have tried swapping the banana for applesauce in spring and pumpkin puree in fall. Each variation brings its own personality while keeping that same comforting texture.

Make Them Yours

Adding a scoop of protein powder turns these into post-workout fuel. Just reduce the oats slightly to keep the consistency right.

Serving Suggestions

Warm with a smear of almond butter is my absolute favorite way to eat them, but they are just as good cold from the fridge when you are rushing out the door.

  • Try crumbling them over yogurt for an extra hearty breakfast bowl
  • They pair wonderfully with a cup of coffee in the afternoon
  • Pack them for hiking or road trips for travel-friendly energy
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Freshly baked oatmeal bars with sliced bananas and nuts on a white marble countertop. Pin it
Freshly baked oatmeal bars with sliced bananas and nuts on a white marble countertop. | vectorbaker.com

There is something deeply satisfying about a recipe that comes together in minutes but tastes like you put in real effort. These bars have saved so many mornings.

Recipe FAQs

Can I make these oatmeal bars without banana?

Yes, you can substitute the mashed banana with unsweetened applesauce or pumpkin purée in equal amounts. This will slightly alter the flavor while maintaining the soft texture and binding properties needed for the bars.

How do I know when the bars are done baking?

The bars are ready after 20 minutes at 350°F when the edges are lightly golden. The unique technique of letting them rest in the turned-off oven for 5 additional minutes helps them set completely without overbaking.

What makes these bars freezer-friendly?

These bars freeze exceptionally well due to their oat-based structure. Wrap individual portions in parchment paper and store in freezer-safe bags for up to 3 months. Thaw overnight in the refrigerator or warm briefly in the microwave.

Can I add protein powder to make them more filling?

Absolutely. Add one scoop of your favorite protein powder and reduce the rolled oats by about 2-3 tablespoons to maintain the proper consistency. This boosts the protein content to approximately 5-6 grams per bar.

What's the best way to store leftovers?

Keep sliced bars in an airtight container in the refrigerator for up to 4 days. For longer storage, freeze individually wrapped portions. The bars actually develop more flavor after sitting overnight as the ingredients meld together.

Are these bars gluten-free?

Yes, when using certified gluten-free rolled oats, these bars are completely gluten-free. Always check that your oats are specifically labeled gluten-free, as regular oats may be processed in facilities with wheat.

Baked Oatmeal Bars

Soft, wholesome banana oatmeal bars ready in 25 minutes. Perfect for meal prep and freezer-friendly.

Time to prep
5 minutes
Time to cook
20 minutes
Overall time
25 minutes
Created by Jack Sanchez


Skill level Easy

Cuisine type American

Makes 9 Portions

Dietary details Meat-free, No dairy

What you need

Dry Ingredients

01 2 cups rolled oats
02 1/2 teaspoon salt

Wet Ingredients

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

Optional Mix-Ins

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

Directions

Step 01

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

Step 02

Combine Dry Ingredients: In a large mixing bowl, combine rolled oats and salt.

Step 03

Mix Wet Ingredients: Add mashed banana, water, maple syrup or chosen sweetener, oil or nut butter, and vanilla extract. Stir until evenly incorporated.

Step 04

Add Optional Mix-Ins: Gently fold in chocolate chips, nuts, dried fruit, or seeds if using.

Step 05

Transfer to Pan: Pour mixture into prepared baking pan. Use spatula to smooth top evenly. Sprinkle additional mix-ins on surface if desired.

Step 06

Bake and Set: Bake for 20 minutes. Turn off oven without opening door and let bars set inside closed oven for 5 additional minutes.

Step 07

Cool and Slice: Remove from oven and allow to cool completely. Slice into 6 to 9 bars.

Step 08

Storage: Store leftovers in airtight container in refrigerator up to 4 days or freeze up to 3 months.

Tools you'll need

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

Allergy advice

Always check each ingredient for allergens and talk to a healthcare pro if you’re unsure.
  • Contains oats. Choose certified gluten-free oats if necessary. May contain nuts if nut butter or nut mix-ins are used. Honey is not vegan; use maple syrup or agave for vegan option.

Nutrition info (per portion)

These values are estimates for your reference. They’re not a substitute for professional medical advice.
  • Calorie count: 125
  • Fat content: 3.5 grams
  • Carbohydrates: 23 grams
  • Proteins: 2.5 grams