banana-oat crumble bars

Blueberry crumble, strawberry crumble, rhubarb crumble.....why no banana crumble?
I've wondered that from time to time.
And had to fix that.
Even pineapple crumble sounds good too.
I made these fairly simple, fairly easy--easy to throw together if you have really ripe bananas lying around and aren't in the mood for a heavy banana bread.
I made these on the first try, but should I make them again I would definitely sauté the bananas with a bit of spiced rum, just to give it that extra something-something.
So, I highly suggest doing this if you want to give these a go.
And also with these, it's ok to bake them a little longer for that "crisp/crunch" factor.
They have oats in there so they can take a little extra browning.
It should be noted, that my 'banana hating' husband LOVED these, in case you have a 'banana-hating' person in your household.
Adding a layer of crushed nuts (pecans, walnuts) on top of banana filling might be a great idea too.
Just sayin....
Half the crumble dough for bottom of pan, then banana filling, then remaining dough on top, in clumps.
Easy peasy!
TIP: if you want traditional gooey crumble hot from the oven? Try serving this immediately after baking with vanilla ice cream.
Or if you want crumble bars, then let it cool down a bit before slicing.

banana-oat crumble bars

2 cups all-purpose flour
1 cup rolled oats
½ ts baking powder
½ ts baking soda
couple dashes of cinnamon, optional
1 cup sugar
½ ts salt
1 cup butter, room temp
1 large egg

banana filling:
2 ripe bananas, mashed fairly well
juice of half a lemon
2 TB light brown sugar
1 TB sour cream
1 egg yolk

cook notes: The crumble bars are really tasty when they are crispy. So you might want to bake them to the full 40-45 minute mark.  Look for golden brown (not light golden brown) to know when they are done. As I stated in the blog post, it might be a good idea to sauté the bananas with a TB of butter and some spiced rum before using.  I know it would be a great boost in taste. If you do this, then omit the lemon juice step. If you want bars then let the crumble cool a bit before slicing, if you want warm gooey crumble then serve immediately with vanilla ice cream!  So good.  But remember the filling will be hot!

In a small bowl, mash the bananas, sprinkle with the lemon juice, stir, set aside.
Preheat the oven to 350F. Line a 9-inch square baking pan with aluminum foil and lightly grease or if you have nonstick pan then just spray with non-stick spray.
For the crumble: in a large mixing bowl, whisk together all the dry ingredients (and the oats). 
Add in the butter and egg, mix until crumbly and just combined.
Take the crumb mixture, divide in half and put one half in the bottom of the pan.  Making sure to get all the corners.
Take the mashed bananas, add in the brown sugar, the sour cream, and egg yolk. Mix well.
Next put a nice layer of the banana mixture on top of the crumb dough; try not to go to close to the edges.  There might be some banana mixture leftover.
Taking the remaining half of the crumb mixture, and add it to the top of the banana filling. 
Please do this by adding it in clumps/balls AND do not press down.
Just make sure to put the mixture on loosely, and evenly; getting the corners covered too.
Bake for 40-45 minutes, until golden browned.
I wanted my crumble fairly crisp, so I went the whole 45 minutes. 
It’s really good when it’s nice and crispy.
You need to let bars cool completely in order for them to set up right. OR serve right away if you want traditional warm gooey crumble with vanilla ice cream!
Makes about 12 bars depending on how you slice them.


  1. Bananas, and tons of crumbly texture, and that filling - sooo good!

  2. What a creative take on the crumble! Love it~ so much!

  3. I'm always up for a good crumble and banana crumble definitely sounds like uncharted territory! No idea why that is but I'm glad you turned it into a reality!

  4. I'm a blueberry crumble lover but I could definitely go for this banana crumble! Looks so delicious!

  5. Fabulous alternative to banana bread when you've got really ripe bananas hanging around... like I usually do!

  6. I won't make these
    only because
    I won't stop eating them!

  7. I like anything with the word crumble in it. And bananas and rum and last but not least, butter!

  8. Wow, that looks fabulous! Will be putting this on my to-bake list. Pinning!

  9. I am a lover of crumble so these bars are SCREAMING my name. Love, love, love these Dawn. Bookmarked.

  10. These look fantastic! Love the idea of them all warm and gooey out of the oven. :)

  11. These look awesome! I love that they're part cake part bar. I'll take one hot out of the oveb please :)

  12. indeed, there's no good reason that bananas shouldn't be getting some crumble love. nice work!

  13. I am having one of those "Why didn't I ever think about that?" moments! Banana crumble bars sound so good!

  14. Great article with excellent idea about banana oat crumble bars! I appreciate your post. Thanks so much and let keep on sharing your stuffs keep it up.

  15. heck yeah! why not banana :) love the ideas for sauteing in some rum and adding pecans on top :)


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