Banana Baked Oatmeal Bars

Featured in: Sweet & Salty Bites

These wholesome banana oatmeal bars combine simple pantry staples into a soft, chewy breakfast or snack. Ready in just 25 minutes with only 5 minutes of active prep, they're ideal for busy mornings and meal prep. The naturally sweetened batter features mashed bananas, rolled oats, and pure maple syrup for a guilt-free treat you can customize with chocolate chips, nuts, or dried fruit.

Updated on Sat, 07 Feb 2026 12:06:00 GMT
Golden-brown Baked Oatmeal Bars studded with chocolate chips and chopped nuts, resting on a rustic wooden board. Save to Pinterest
Golden-brown Baked Oatmeal Bars studded with chocolate chips and chopped nuts, resting on a rustic wooden board. | snackandmack.com

My youngest woke up last Tuesday asking for breakfast at 5 AM, and I stood in the kitchen staring at three overly ripe bananas on the counter, debating between throwing them out or getting creative. That morning fog led to these oatmeal bars, and by 7 AM when the rest of the house smelled like warm vanilla and toasted oats, I knew this accidental recipe was staying in rotation forever.

Last month I made a double batch for my sisters baby shower, stacking them on a platter between the fruit salad and muffins. By the time I circled back to check the food table, only crumbs remained, and three different people had already slipped me their phones asking for the recipe.

Ingredients

  • 2 cups rolled oats: Old-fashioned oats give the best chewy texture, but quick oats work in a pinch
  • 1/2 tsp salt: This small amount wakes up all the other flavors and prevents the bars from tasting flat
  • 1 1/3 cups mashed ripe banana: About 3 medium bananas with plenty of brown spots for natural sweetness
  • 6 tbsp water: Creates the right consistency without making the batter too wet
  • 3 tbsp pure maple syrup, agave, or honey: Adjust based on how sweet your bananas are
  • 3 tbsp oil, nut butter, or additional water: Coconut oil adds lovely subtle flavor, while nut butter boosts protein
  • 1 tsp pure vanilla extract: Dont skimp here, it makes the kitchen smell incredible
  • 1/3 cup optional mix-ins: Chocolate chips, chopped nuts, dried fruit, or seeds whatever you have on hand

Instructions

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Preheat your oven to 350°F (175°C) and prepare your pan:
Line an 8-inch square baking pan with parchment paper, letting the edges hang over the sides for easy removal later.
Combine the dry ingredients:
In a large mixing bowl, stir together the rolled oats and salt until evenly distributed.
Add the wet ingredients:
Pour in the mashed banana, water, sweetener, oil or nut butter, and vanilla. Stir until everything is well combined and no dry pockets remain.
Fold in your mix-ins:
Gently incorporate chocolate chips, nuts, dried fruit, or seeds if using, being careful not to overmix.
Spread and bake:
Pour the batter into your prepared pan and use a spatula to smooth the top evenly. Bake for 20 minutes until set and lightly golden.
Let them set:
Turn off the oven and leave the bars inside with the door closed for 5 additional minutes.
Cool and slice:
Remove from the oven and let cool completely before lifting out by the parchment paper and cutting into 6 to 9 bars.
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Grill meats and vegetables indoors with beautiful sear marks and easy cleanup using minimal oil.
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Warm and soft Baked Oatmeal Bars sliced into squares, revealing a chewy interior flecked with ripe banana. Save to Pinterest
Warm and soft Baked Oatmeal Bars sliced into squares, revealing a chewy interior flecked with ripe banana. | snackandmack.com

My neighbor texted me yesterday saying her toddler who refuses breakfast ate two bars straight from the freezer, still slightly frozen, and asked for more. That is the highest praise I can imagine.

Storage Solutions

I keep these in the refrigerator for easy breakfast grabbing throughout the week. The texture actually improves after a day or two as the flavors settle and the oats soften slightly.

Make It Yours

Swapping half the banana for unsweetened applesauce creates a lighter flavor, while pumpkin puree makes them taste like fall in a bar. Each variation brings something different to the table.

Serving Ideas

Sometimes I warm a bar for 30 seconds in the microwave and top it with a dollop of Greek yogurt and a drizzle of almond butter. That small upgrade turns a simple breakfast into something that feels like a treat from a cafe.

  • Wrap individual bars in parchment for busy mornings
  • Crumble leftovers over oatmeal or yogurt bowls
  • Store extras in the freezer for up to 3 months
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Freshly baked Baked Oatmeal Bars stacked high, perfect for a grab-and-go breakfast or healthy afternoon snack. Save to Pinterest
Freshly baked Baked Oatmeal Bars stacked high, perfect for a grab-and-go breakfast or healthy afternoon snack. | snackandmack.com

There is something deeply satisfying about turning spotted bananas into breakfast my family actually gets excited about eating.

Recipe FAQs

Can I make these oatmeal bars gluten-free?

Yes, simply use certified gluten-free rolled oats to ensure the bars are completely gluten-free while maintaining the same texture and flavor.

How should I store these banana oatmeal bars?

Keep leftovers in an airtight container in the refrigerator for up to 4 days, or freeze individually wrapped bars for up to 3 months.

What can I substitute for the mashed banana?

Unsweetened applesauce or pumpkin purée work beautifully as alternatives, offering slightly different flavors while maintaining the moist texture.

Why let the bars cool in the closed oven?

Resting in the cooling oven helps the bars set properly without becoming dry, ensuring they hold their shape when sliced.

Can I add protein powder to these bars?

Absolutely. Stir in a scoop of your favorite protein powder and reduce the oats slightly to maintain the proper consistency.

Banana Baked Oatmeal Bars

Soft, chewy banana oatmeal bars ready in 25 minutes. Perfect for healthy breakfasts and meal prep.

Prep Time
5 min
Cook Time
20 min
Overall Time
25 min
Recipe by Snack And Mack Ryan Mitchell

Recipe Type Sweet & Salty Bites

Skill Level Easy

Cuisine Type American

Output 9 Serving Size

Dietary Details Vegetarian-Friendly, Dairy-Free

Ingredient List

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

Steps

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 alternative sweetener), oil (or nut butter or extra water), and vanilla extract. Stir until evenly combined.

Step 04

Add Optional Mix-Ins: Fold in chocolate chips, nuts, dried fruit, or seeds if desired.

Step 05

Transfer to Pan: Pour mixture into prepared baking pan. Use spatula to smooth top evenly. Sprinkle additional toppings on surface if preferred.

Step 06

Bake and Set: Bake for 20 minutes. Turn off oven and leave bars inside closed door for 5 additional minutes to set completely.

Step 07

Cool and Slice: Remove from oven. Cool completely before slicing into 6 to 9 bars.

Equipment Needed

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

Allergy Info

Double-check every item for known allergies. If unsure, reach out to a healthcare provider.
  • Contains oats (verify gluten-free certification if required).
  • May contain nuts if nut butter or nuts are incorporated.
  • Honey is not vegan; substitute with maple syrup or agave for vegan option.

Nutrition Details (each serving)

Nutrient details are offered for reference only. Speak with your doctor for personal health questions.
  • Calorie Count: 125
  • Fat Content: 3.5 g
  • Carbohydrate: 23 g
  • Proteins: 2.5 g