Blueberry Pie Oatmeal Crumble Bars

Why make pie when you can enjoy these Blueberry Pie Oatmeal Crumble Bars with just four ingredients??  Infinitely easier than pie, serves a crowd, and so fantastically yummy – you just can’t go wrong with these bars.

Blueberry Pie Oatmeal Crumble Bars - only FOUR ingredients! |

Ohmygosh.  Tomorrow is the last day of school for the boys.  I seriously can’t even believe it.  Reece insisted that I spend some time in his class today helping out.  Apparently I’ve helped in Bryce’s class more…someone has been keeping track and it sure the heck isn’t me!

Of course with the end of school comes lots and lots of minimum days.  Super fun for the boys and a dry run for me on how to work with the boys home.  These bars are the result of our efforts.

Blueberry Pie Oatmeal Crumble Bars - only FOUR ingredients! |

So I did it again.

I can’t help it.  I’m addicted to these crazy-easy crumble bars.  Four ingredients.  Total bliss. Can you blame me?

I’ve shared a couple varieties of this crumble bar before – cherry and blackberry.  I’ve been making these bars for as long as I can remember and I am awed at how yummy and EASY they are each and every time.

My boys love these bars.  They love to help make them.  They love to eat them.  Especially warm from the oven with a big (GIANT) scoop of vanilla ice cream.

Life just does not get any better.

Blueberry Pie Oatmeal Crumble Bars - only FOUR ingredients! |

Infinitely easier than pie, serves a crowd, and so fantastically yummy – you just can’t go wrong with these bars.

Blueberry Pie Oatmeal Crumble Bars
Recipe type: dessert
  • 1 package yellow cake mix
  • 2½ cups quick-cooking oats
  • ¾ cups butter, melted
  • 1 21 oz can blueberry pie filling
  1. Preheat oven to 375 degrees.
  2. Line a 9 x 13 baking dish with parchment paper or grease with cooking spray.
  3. Mix cake mix and oats in a large bowl.
  4. Add melted butter, stir until crumbly.
  5. Press down half the crumbs onto the bottom of the pan.
  6. Carefully spread blueberry pie filling over the crumb crust.
  7. Spread remaining crumbs over pie filling and press down gently.
  8. Bake for 18 to 23 minutes or until very lightly golden brown.
  9. Eat warm or cool, cut into bars, and serve.

More bars we love:


Peanut Butter Caramel Toffee Chocolate Chip Cookie Bars 


Strawberry Lime White Chocolate Gooey Bars


Chocolate Chip Caramel Cookie Bars

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  1. What a great idea! Love that it’s so simple, I’ll have to try this sometime soon. :)
    How to Philosophize with Cake recently posted..Vegan peanut butter and jelly sugar cookie sandwiches

  2. Thank you Trish for the nice recipe.

  3. This looks really, really good! I can’t wait to try the recipe!
    Librarian Lavender recently posted..Crazy Rumors Bubble Gum Flavored Lip Balms

  4. Trish these are gorgeous…and…I just made bb pie bars last week for a post in like 2 weeks. Thankfully,they’re not the same as yours :) Yours are gorg & pinned! love how you worked oats into that topping! YUM :)

  5. I am IN LOVE with all your crumble bars!!! These are gorgeous!
    Dorothy @ Crazy for Crust recently posted..Brownie Gooey Bars

  6. I could definitely eat a couple of these with my morning coffee. Great job :)

    Happy Blogging!
    Happy Valley Chow
    Happy Valley Chow recently posted..Cuban Burger

  7. These look insanely good Trish! I love crumble bars and yours totally rock with only 4 ingredients – so brilliant and can’t wait to try these :) Pinned :)
    Kelly – Life made Sweeter recently posted..Minion Banana Macarons with Coconut Buttercream Frosting

  8. It’s funny how those kids keep track of things like that, isn’t it? Mine are the same way. We have one more week to go and I can’t believe it! These bars look like such a winner — you really can’t beat a 4 ingredient, fruity, delicious dessert like this!
    marcie recently posted..Beer Braised Slow Cooker Pulled Pork with Honey Pineapple Barbecue Sauce

  9. Oh goodness, totally in love with these bars.. especially that crumble part! I can’t say no to anything blueberry!

  10. Just 4 ingredients?? Trish, I’m in love — these are absolutely brilliant!! I really need to try a version of these really soon. Nothing beats a quick and easy fruity dessert in the summer! :) And I really hope you and your boys are able to figure out a fun (and productive — for you) summer schedule for everyone! If you ever need them out of the house for a bit, I could always use a few taste testers… ;)
    Amy @ Amy’s Healthy Baking recently posted..Honeyed Peach Cheesecake

  11. Happy summer to your boys! What a perfect treat to start vacation. Love how buttery they look. Mmmmm.
    Erin | The Law Student’s Wife recently posted..Strawberry Shortcake Trifle

  12. I’m counting down the days now to blueberries are fresh and in season. So looking forward to canning blueberry pie filling. Yum. This will definitely be on the to-do list.
    Perfection, Trish!
    Melanie @ Carmel Moments recently posted..Raspberry Chocolate Brownies

  13. This is one of my all-time favorite recipes! I usually make it with strawberry jam and white chocolate chips in the middle, but honestly, you can put anything in there and it’s always addictive and delicious! Beautifully photographed, as always!
    Mir recently posted..Magic Bar Pie

  14. I am so addicted to crumble bars too! And you always deliver!! These blueberry bars are perfect!
    Zainab recently posted..Matcha Genoise Cake

  15. When you said four ingredients I was like, ‘say it isn’t so!’ These crumble bars look sooo good. Mmmm with big scoop of ice cream, I couldn’t imagine anything better. Those strawberry bars look amazing too! Will pin :)

    Tammy recently posted..Boneless Chicken Thighs with Fresh Tomato Parmesan

  16. These looks so good and easy! I cannot get enough blueberries right now, so I definitely need to try this:)
    Ginnie recently posted..Hello, Friday! Link Roundup

  17. These look great and since I dont have a pie pan this is a great alternative!

  18. i love blueberries. these look great!
    dina recently posted..Weekend Whets 6/20

  19. Could you haw fresh blueberries instead of canned?

  20. Hi im a girl from sweden and I adore the looks of your baking and would love to try it out, but they dont sell produkts like: yellow cake mix or blueberry pie fillings, in sweden. So I wonder whats inside the cake mix and how much is a can of blueberry pie filling and could I for example be able to switch it to blueberry jam?

    Keep up the good work and greetings from sweden ;)

    (sorry for any bad english xD)

  21. Hi Trish! These look great I was wondering about the cake mix. The cake mix should be made first right or just use the dry mix? Sorry for the lame question.



  22. I can no longer see the recipe on this page, is it just me or did something happen to it. I so wanted to make these.

  23. Trish, what size can are you talking about? I see as wide as 12 oz – 21 oz cans available. That’s quite a difference in a recipe that could make or mess it up if too much. Thanks! Great looking recipe!!

  24. Lisa DeMello says:

    Do these need to be refrigerated?

  25. How many days approximately would these survive? I’m traveling for Christmas and looking for something I can make on Tuesday and serve on Friday. Thanks!

  26. Cake mixes are just the best! I love your idea for dressing up a cake mix to make these bars. Blueberries are my favorite, so I can’t wait to try this.

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