Banana Baked Oatmeal Bars

Featured in: Sweet Bites

These wholesome oatmeal bars combine ripe mashed bananas with rolled oats, pure maple syrup, and vanilla for a naturally sweet treat. The bars bake up soft and chewy with golden edges, requiring just 5 minutes of prep before popping in the oven. Let them set in the cooling oven for perfect texture—no crumbling when sliced. Customize with chocolate chips, nuts, or dried fruit for variety. Store in the refrigerator for quick weekday breakfasts or freeze for up to three months, making them ideal for meal prep Sundays.

Updated on Sat, 07 Feb 2026 11:17:00 GMT
Freshly baked Baked Oatmeal Bars with melted chocolate chips and toasted banana slices cooling on a wire rack. Pin
Freshly baked Baked Oatmeal Bars with melted chocolate chips and toasted banana slices cooling on a wire rack. | grillandbites.com

The smell of bananas ripening on my counter used to feel like a race against time until I discovered baked oatmeal bars. One rainy Sunday morning, I stared at three spotted bananas and decided to throw them into oatmeal instead of making yet another loaf of banana bread. My roommate wandered into the kitchen, drawn by the sweet vanilla aroma, and asked what smelled like a cozy bakery in our apartment.

Last winter, my sister visited and woke up late, expecting to grab a granola bar on her way out. Instead, I warmed one of these oatmeal bars and topped it with almond butter. She sat down at the kitchen table, took one bite, and cancelled her morning plans. Now she texts me every time she spots brown bananas in her own kitchen.

Ingredients

  • 2 cups rolled oats: Old-fashioned oats give the best chewy texture, but quick oats work in a pinch
  • 1/2 tsp salt: Enhances the natural sweetness of the bananas
  • 1 1/3 cups mashed ripe banana: About 3 medium bananas with plenty of brown spots for maximum sweetness
  • 6 tbsp water: Creates the right consistency without needing milk
  • 3 tbsp pure maple syrup: Agave or honey work too, though honey is not vegan
  • 3 tbsp oil or nut butter: Coconut oil adds subtle richness while almond butter boosts protein
  • 1 tsp pure vanilla extract: Do not skip this, it makes the kitchen smell incredible
  • 1/3 cup mix-ins: Chocolate chips make them feel like a healthy dessert

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, letting the edges hang over for easy removal later.
Mix the dry foundation:
Combine rolled oats and salt in a large mixing bowl, making sure they are evenly distributed.
Prepare your wet ingredients:
Mash the bananas thoroughly in a separate bowl until almost smooth, then whisk in water, sweetener, oil, and vanilla.
Combine everything together:
Pour the wet mixture into the oats and stir until every oat is coated and the batter feels sticky and cohesive.
Add your personal touch:
Fold in chocolate chips, nuts, or dried fruit, reserving a handful to scatter on top if you like.
Bake to golden perfection:
Spread the batter evenly in your prepared pan and bake for 20 minutes until lightly golden around the edges.
Let them set:
Turn off the oven but leave the bars inside for 5 more minutes, then cool completely before slicing into 6 to 9 pieces.
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Vacuum seal ingredients and leftovers to keep food fresh longer and simplify meal prep.
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Golden brown Baked Oatmeal Bars are sliced into squares, ready for a quick breakfast or healthy afternoon snack. Pin
Golden brown Baked Oatmeal Bars are sliced into squares, ready for a quick breakfast or healthy afternoon snack. | grillandbites.com

These bars became my go-to contribution to office potlucks after a colleague asked for the recipe and shared it with our entire department. Now whenever I bring them, people immediately ask if they are the oatmeal bars everyone has been talking about.

Make Them Your Own

Swap mashed banana for unsweetened applesauce in spring or pumpkin purée in fall for seasonal variations that keep this recipe feeling fresh year-round. Each change subtly transforms the texture and creates a completely different experience.

Storage Secrets

I learned the hard way that these bars disappear faster from the counter than the freezer, so now I immediately portion half into freezer bags. They thaw overnight in the refrigerator or can be warmed straight from frozen in the microwave for 30 seconds.

Serving Ideas

While these are perfect on their own, topping them expands the possibilities entirely. A dollop of Greek yogurt adds protein, almond butter makes them more filling, and a drizzle of extra maple syrup turns them into dessert.

  • Try crumbling a cold bar over warm oatmeal for texture contrast
  • Serve with fresh berries for a complete breakfast bowl
  • Pair with coffee or tea for an afternoon snack
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Homemade Baked Oatmeal Bars with a chewy texture, drizzled with maple syrup and served with a glass of almond milk. Pin
Homemade Baked Oatmeal Bars with a chewy texture, drizzled with maple syrup and served with a glass of almond milk. | grillandbites.com

There is something deeply satisfying about turning ingredients that were moments away from compost into breakfast for the week. These bars have become my proof that simple food made with basic ingredients can be the most comforting of all.

Recipe FAQ

Can I make these without banana?

Yes, you can substitute unsweetened applesauce or pumpkin purée in equal amounts. Both alternatives provide moisture and natural sweetness, though the flavor profile will shift slightly from banana to the fruit or vegetable you choose.

How do I store these bars?

Keep bars in an airtight container in the refrigerator for up to 4 days. For longer storage, wrap individually and freeze for up to 3 months. Thaw overnight in the refrigerator or warm briefly in the microwave before serving.

What makes these bars chewy?

The mashed banana creates moisture and natural sweetness that results in a chewy texture. Letting the bars rest in the closed oven for 5 minutes after baking also helps them set properly without becoming dry or crumbly when sliced.

Can I add protein powder?

Absolutely. Add one scoop of protein powder to the batter and reduce the rolled oats by about 1/4 cup to maintain the right consistency. Vanilla or unflavored protein powder works best to complement the banana flavor.

Are these bars gluten-free?

These bars are naturally gluten-free if you use certified gluten-free rolled oats. Standard oats are often processed in facilities with wheat, so look for oats specifically labeled gluten-free if you have celiac disease or gluten sensitivity.

Can I reduce the sugar?

The maple syrup provides just 3 tablespoons for the entire batch, which already minimizes added sugar. The ripe bananas contribute significant natural sweetness, so you could reduce the syrup to 2 tablespoons if you prefer less sweetness overall.

Banana Baked Oatmeal Bars

Soft, chewy oatmeal bars with sweet mashed banana, pure maple syrup, and vanilla. Perfect for breakfast or healthy snacking.

Prep duration
5 min
Cook duration
20 min
Overall duration
25 min


Skill level Easy

Heritage American

Output 9 Portions

Dietary requirements Vegetarian, No dairy

Components

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

Directions

Phase 01

Preheat and Prepare Pan: Preheat your oven to 350°F (175°C). Line an 8-inch (20 cm) square baking pan with parchment paper or grease well.

Phase 02

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

Phase 03

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

Phase 04

Add Optional Mix-Ins: Fold in any optional mix-ins such as chocolate chips or nuts.

Phase 05

Transfer to Pan: Pour the mixture into the prepared baking pan and use a spatula to smooth the top. Sprinkle additional chocolate chips or nuts on top if desired.

Phase 06

Bake and Set: Bake for 20 minutes. Turn off the oven (do not open the door) and let the bars sit inside the closed oven for an additional 5 minutes to set.

Phase 07

Cool and Slice: Remove from the oven, allow to cool completely, then slice into 6–9 bars.

Phase 08

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

Tools needed

  • 8-inch (20 cm) square baking pan
  • Mixing bowl
  • Spatula or spoon
  • Measuring cups and spoons
  • Parchment paper (optional)

Allergy details

Review each ingredient for potential allergens and consult healthcare providers if you're uncertain about any components.
  • 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 breakdown (per portion)

These values are estimates only and shouldn't replace professional medical guidance.
  • Energy: 125
  • Fat: 3.5 g
  • Carbohydrates: 23 g
  • Protein: 2.5 g