Raspberry Crumble Bars

These dessert squares with raspberries and oat crumble are sweet, tangy and totally delicious. Raspberries, oats, brown sugar, butter, flour and more

I need to make a confession. I look for any opportunity to make oat crumble. The combination of oats, brown sugar and butter – they all work together to make something sweet, crunchy, and totally delicious.

So, after I picked a bunch of raspberries at Millar Berry Farms, I knew that I was going to make some sort of raspberry crumble. These are quite similar to the way that I make apple crisp, but, the middle is with raspberries instead of apples.

These dessert squares with raspberries and oat crumble are sweet, tangy and totally delicious. Raspberries, oats, brown sugar, butter, flour and more

Mixing the fresh berries with a little flour and sugar turn the middle into something similar to a fruit pie filling.

These crumble bars have a wonderful combination of sweet and tang. Once made, they can be cut and then frozen for a couple months. That is a great way to store them if they do not all get eaten right away. They are that good!

Raspberry Crumble Squares-9

I love raspberries and have made many different recipes featuring these delicious tart berries. Here are some other great raspberry recipes.

Raspberry Crumble Bars

4.92 out of 5
37 reviews
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These dessert squares with raspberries and oat crumble are sweet, tangy and totally delicious. Raspberries, oats, brown sugar, butter, flour and more
Prep Time: 15 minutes
Cook Time: 30 minutes
Total Time: 45 minutes
Servings: 24 squares

Ingredients

  • 2 cups flour
  • 2 cups oats
  • cups brown sugar
  • 1 tsp baking powder
  • 1 cup melted butter
  • 2 pints (4 cups) fresh raspberries
  • 1/2 cup white sugar
  • 2 tbsp flour
  • 2 tbsp lemon juice

Instructions

  • Preheat oven to 350F.
  • Mix the flour, oats, brown sugar and baking powder in a bowl. Stir in the melted butter until it forms a wet crumbly consistency.
  • Take about two thirds of the crumble mixture and dump it into an ungreased 13x9 pan.
  • Mix together the raspberries, sugar, flour and lemon juice so the raspberries are well coated.
  • Spread the raspberry mixture evenly across the crumble base.
  • Sprinkle the remaining crumble mixture evenly on top.
  • Place in the oven and bake for 30-40 minutes.
  • Cool on a wire rack and then cut into squares.

Raspberry Crumble Squares-8pin

Categories

These dessert squares with raspberries and oat crumble are sweet, tangy and totally delicious. Raspberries, oats, brown sugar, butter, flour and more

Did you try this recipe?

Leave a comment and let me know how it turned out. Or, take a picture to share on Instagram and tag me @theblackpeppercorn.

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Recipe Rating




49 comments

  • Very easy and very good. Thx

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  • 5 stars
    This recipe is simply basic and excellent. I have made it twice now. The first time I made it with raspberries and the second time, I made it with a mix of raspberries, blueberries and strawberries. The bars are so tasty. It’s a great way to use up the fresh raspberries from our garden. I am going to try freezing some of the bars to see how they turn out too. Thanks for the great recipe.

    • Reply
  • 5 stars
    I’ve made this recipe twice now. The first time I used raspberries and the second time I used a mix of raspberries, strawberries and blueberries. It turned out great. This recipe will definitely be one that will become a standard. Thanks for the great recipe.

    • Reply
  • 5 stars
    These came out fantastic!!! Really easy recipe very pleased. Tasted great AND looked good too!

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  • 5 stars
    This was delicious and easy. I didn’t have quite enough fresh raspberries so added about a 1/4 cup of raspberry jam to top them up. Also added slivered almonds to the top crumble just because I had them. I did not have a large enough pan so had enough left over to put into two small round tart pans. They looked so elegant that I would definitely serve them at a dinner party with cream or ice cream.

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  • 5 stars
    Following directions completely these were amazing!

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  • 5 stars
    I have made these crumble bars twice now Both times they were beyond delicious. The first tryout (prototype) I used a smaller pan as it was the only one I had. The outcome was denser. Second time around correct pan size and bingo. Thank you so much. I’ll be making these as a gift for people for a long time to come!!

    • Reply
  • Awesome yummy yummy

    • Reply
  • 5 stars
    this was the best and easiest recipe ive made for a while- it is both sour and sweet, and perfect if served with some cream 😋

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  • can I use frozen raspberry’s ?

    • Reply
    • I have not tried it, but there are some comments that people have left where they tried with frozen berries and it worked out well. One comment said that they added them, while still frozen, and added 10 minutes to the baking time and they turned out well. Hope this helps! If you do try, I would love to hear how they turned out. 🙂

      • Reply
      • I just let my frozen raspberries sit out until thawed and drained the juice . Worked perfect 👍

        • Reply
  • 5 stars
    Just made these to use up fresh raspberries in the fridge. Super easy recipe thank you so much!

    • Reply
  • 5 stars
    These are amazing! Fun easy to follow recipe defanantly going to make these again I used vegan butter since my daughter in vegan.

    • Reply
    • So glad you enjoyed them! Thanks for sharing the vegan butter as an option.

      • Reply
  • 5 stars
    Super easy and yummy!!

    • Reply
  • 4 stars
    Lovely results, went straight in my favourites. I did tinker, adding 1tsp cinnamon and of vanilla essence to the topping and cutting the sugar down by a third, replacing plain with self raising as I can’t eat baking powder. Filling half blackberries as that’s what I had, omitted lemon juice and used used potato flour to thicken with again a third less sugar. Needed 45 mins to get a good colour in my oven.

    • Reply
  • 5 stars
    Excellent recipe! I grow raspberries and there so prolific I was at a loss as to what to do with them. Now to experiment with your other recipes . Thank you ?

    • Reply
    • So glad you stopped by and enjoyed these bars! I would love to hear what other recipes you try!

      • Reply

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