Blueberry Nectarine Buckle

Blueberry Nectarine Buckle

Ever had a Sonker? How about a Slump? Or a Grunt? Do you even know what I’m talking about? (Oh, that poor Ceri Marsh, she’s finally lost her mind. Too little sleep and too many Dr. Seuss books and Wozit-in-my-Closet, she cracked up.) No, seriously, they’re desserts -old fashioned American desserts that are simple and make the most of summer-ripe fruit. I first came across a Slump in Amanda Hesser’s excellent Cooking for Mr. Latte. I have no idea why they all have such hilarious names. The best I’ve heard so far is Boy Bait. You know that’s coming soon, right? But this week, we meet the Buckle.

photos: Maya Visnyei

Hello, Buckle! We’ve got a lot more blueberry recipes coming up on SPC but I couldn’t resist picking some up this week. We eat blueberries all year but when the little, wild local ones are in the markets and grocery stores you really have to make the most of it. They’re insanely flavourful and just put those big, watery things you eat in January to shame. I’m definitely going to buy extra this year and freeze them while they’re in season. I particularly love the combination of peach with blueberry so I was all over this nectarine blueberry Buckle recipe in the Sono Baking Company Cookbook. I’ve made a few things from this book and while the recipes always lean hard on butter and sugar, they’re always excellent. Clearly it’s why they’re excellent. Buckles are moist, single layer cakes, often made with fresh blueberries, with a streusel topping. It was easy-peasy to make. I only used about half the streusel topping that the original recipe called for – it was just too much in my mind – so I’ve halved it here.

This cake would be great with a coffee in the afternoon but we took it to a barbecue and it was a big hit with the kids. That could be because the six of them took upon themselves to decorate it with red currants and flowers from our hosts’ garden, a couple of strawberries from the fruit salad and some curly gift-wrapping ribbon. It made quite an impressive presentation. Pride in their work aside, they seem to love the Buckle.

Blueberry Nectarine Buckle


  • For the streusel:
  • 1/2 cup flour
  • 1/2 cup brown sugar
  • 1/2 tsp salt
  • 1/4 tsp cinnamon
  • 1/4 cup (half a stick) cold, unsalted butter, cut into small cubes
  • For the cake:
  • 1 1/4 flour
  • 2 tsp baking powder
  • 1 cup (2 sticks) unsalted butter, room temperature
  • 1 cup sugar
  • 1/2 tsp salt
  • 4 eggs
  • 2 tsp vanilla
  • 2 cups blueberries
  • 2 cups diced nectarines (1/2 to 1 inch dice), about 2 nectarines
  • Confectioner's sugar for dusting


Preheat the oven to 350 degrees.

Mix the dry ingredients in a bowl.

Using your fingers, quickly pinch the butter into small pieces, working it into the dry mixture.

Keep tossing the pea-sized pieces of butter in the dry ingredients until you have a crumbly textured meal.

Pop it in the fridge while you whip up the cake.

Blend together the flour and baking power together in a bowl. Set aside.

Whip the butter, sugar and salt with an electric mixture for 2 to 3 minutes until it is very light and fluffy. Beat in the eggs one at a time and then add the vanilla.

On a low speed, add the flour mixture until just combined. Don't over mix. Fold in the fruit.

Prepare a 9 x 13 baking dish with a bit of butter.

Place the baking pan on a cookie sheet in case some fruit juices bubble over the edge.

Pour the batter into the pan and use the back of a spoon to smooth it out.

Sprinkle the streusel over the top.

Pop the baking dish on the cookie sheet into the oven.

For 30 to 35 minutes.

Half way through cooking time, turn the dish around and put it back it the oven.

This is a tip you see a lot of serious baking recipes and allows for uneven heat in your oven.

The cake is done when a tester comes out clean (but it will be damp as the cake is very moist) and the topping is nicely browned.

Place on a wire rack to cool. Dust with confectioner's sugar before serving.



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  1. Julia
    July 12, 07:51 Reply

    I love traditional dessert like this. Simple but sooooo good! Now I need to look up what a Grunt is…

  2. Amy
    August 10, 10:37 Reply

    Oh, this looks delish!! Will definitely be trying it. Thanks for the recipe!

  3. Tory
    December 18, 04:00 Reply

    I love blueberries and this recipe picture makes my mouth water, I will be making this soon! Thanks for your lovely blog.

  4. Ceri Marsh
    December 18, 07:33 Reply

    Thanks! Let me know how it goes for you! It’s really so easy. It’s making me miss summer just looking at it again!

  5. Lynda
    June 30, 15:45 Reply

    I also have this cookbook and love it. The blueberry sour cream muffins is the best recipe ever. I put cardamom in it and it’s heaven. I made this recipe yesterday with some beautiful blackberries from the farmes market but I feel like the amount of flour is not nearly enough. Maybe my butter was just too warm but it seemed to me that it needed at least 1 3/4 cup of flour if not 2 cups. We’ll still eat it b/c the money spent on such beautiful berries but we had to bake it an extra 20 mins b/c so much buttery goo and then have put it in the fridge .

  6. Ceri Marsh
    June 30, 17:43 Reply

    Hi Lynda,
    Thanks for your feedback.

    I just had another look at the recipe in the Sono book and the amounts are correct. To be honest, it’s been awhile since I’ve made this buckle so I can’t recall if I needed to bake it a bit longer. I don’t think so or I would have included it in the post (which I originally wrote last summer). And I’m sure it’s not your oven – sounds like you’re a pretty serious baker so you would know if your temperature was off!

    So… I wonder what happened? Maybe, as you say, your butter was softer? Are blackberries more wet than blueberries? In any case, I hope it wasn’t too frustrating. I hate it when you’re really looking forward to the final product and it’s a let down!

    Now I’m going to have to make those muffins!

    Thanks for reading!


  7. Jannie
    July 05, 17:04 Reply

    Thank you / wonderful recipes!!

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