Baked Banana Blueberry Oat Bars 

Need an excuse to use up those sad ripe bananas on your counter? Look no further than these Baked Banana Blueberry Oat Bars. They are easy to assemble, use up 3 bananas, and are packed with bananas, blueberries, and brown sugary oats in each bite. 

Jump to:

• Ingredients you’ll need
• How to ripen bananas
• Equipment 
• How to make Banana Blueberry Oat Bars
• Serving Suggestions 
• Storage 
• Other Bar Ideas
• Baked Banana Blueberry Oat Bars

As someone who is not a huge breakfast person (but a BIG dessert person), this recipe was originally inspired by a bowl of oatmeal. I had been hunting for something delicious to motivate me to eat in the morning when I stumbled upon Pinch of Yum’s Caramelized Banana Oatmeal recipe. The flavors were so good I made oatmeal for breakfast for a few weeks straight. 

As I played around with different ingredients to add in, I kept coming back to a variation with bananas, blueberries, and granola. And, in true dessert-person fashion, I knew I had to figure out how to pack some of those flavors into dessert bar form. 

Ingredients you’ll need

Bananas: 3 ripe bananas. If yours are unripe, don’t let that stop you; see the section below for a quick and easy method. 

Blueberries: you can use either fresh or frozen blueberries for this recipe. If using frozen, do NOT defrost them before using them. 

Rolled Oats: this recipe uses whole, rolled oats. Using different styles of oats (specifically, steel-cut oats) will change the texture. 

You can find a complete list of ingredients, measurements, and instructions at the bottom of this post. 

How to ripen bananas

So, you just bought fresh bananas and don't want to wait a few weeks to try this recipe? That’s ok. You can quickly ripen bananas in the oven.

• Pre-heat oven to 425° 
• Place bananas on a baking sheet covered with foil and bake for 15 minutes or until completely brown
• Allow them to cool for 5-10 minutes 

And just like that, you’ll have perfectly ripe bananas ready to make some delicious oat bars.

Equipment 

• 8 x 8-inch pan 
• Hand or stand mixer 
• 1 large & 2-3 medium mixing bowls 
• Spatula 
• Pastry cutter (optional – a fork or your fingers work great too!) 
• Parchment Paper 

How to make Banana Blueberry Oat Bars

The order of the recipe will go as follows: 

• Cookie base 
• Banana-blueberry filling 
• Oat crumble 
• Assemble

Cookies Base: 

It’s all about the base…

• Preheat your oven to 350° and prepare your 8x8-inch pan with cooking spray and line it with parchment paper. While waiting for the oven to preheat, combine all the dry ingredients: flour, rolled oats, baking soda, cinnamon, and salt in a medium size bowl. 

• In a separate bowl, cream together the butter and sugars on medium for a few minutes or until it looks light in color. Then add the egg and vanilla and mix until fully combined. Add the flour mixture and mix until combined. 

• Press down the cookie base in your prepared 8x8-inch pan and bake for 15 minutes. The edges should look lightly golden brown.

Banana-Blueberry Filling 

While the cookie base is baking and you smell the delicious aroma of butter, sugar, and oats baking, you’ll make the banana-blueberry filling. 

• Start with mashing the bananas. I like to leave a few larger chunks in mine to add texture to the filling. Then stir in the brown sugar, cinnamon, and vanilla. And finally, fold in the blueberries. 

Oat Crumble: 

• In another bowl, combine flour, oats, brown sugar, and cinnamon. Then add cold cubed butter and cut into the dry ingredients until the mixture resembles a coarse crumb. 

Assemble

Just like in Avengers: Endgame, the final step will be to assemble them all. 

Once the cookie base has finished baking, evenly spread the banana-blueberry filling across the base. Then generously sprinkle the oat crumble over the top. Place in the oven for 20 minutes at 350° – the top should have a nice golden brown coloring, and the filling should be set. 

Serving Suggestions 

This recipe was developed to be a dessert or grab-and-go breakfast (we are the adults here, we make the rules). But these are also delicious served warm with a scoop of ice cream. 

Storage 

These can be stored in an airtight container in the refrigerator for up to 3-4 days. 

Other Bar Ideas

Strawberry Pistachio Cheesecake Bars

Meyer Lemon Bars

Did you try this recipe? If you have a moment to spare, please consider leaving a  comment and a star rating below. I would love to hear from you. And, if you want to continue the conversation, tag me in your creations on Instagram. Happy Baking! 

Print