Peanut Butter-Swirled Strawberry Cake

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This is one of the best cakes I’ve ever made. There’s one pound of strawberries in an 8-inch cake.

Along with swirls and valleys of peanut butter. Need I say more.

Peanut Butter-Swirled Strawberry Cake - Easy Recipe at averiecooks.com

The cake is based on the recent Blueberry Muffin and Buttermilk Pancakes Cake ,Peaches and Cream Fluffy Muffin Cake, and the Cream Cheese-Swirled Cherry and Mixed Berries Cake.

I used the same cake base here as I did for those because it doesn’t disappoint. It’s exceedingly moist and soft, and it’s fast and easy.

Like PB & J in decadent cake form.

Peanut Butter-Swirled Strawberry Cake - Easy Recipe at averiecooks.com

The batter comes together with a whisk, and is as easy as making muffin batter. A bowl of dry ingredients, a bowl of wet ingredients, fold wet into dry, and pour in a pan. So easy.

The cake is springy, soft, and fluffy. It’s got just the right amount of density to leave you feeling satisfied.

There’s Greek yogurt (or sour cream) in the batter, along with buttermilk and oil, all of which keep cakes moist and soft.

Peanut Butter-Swirled Strawberry Cake - Easy Recipe at averiecooks.com

There’s an abundance of big, juicy berries woven throughout. I used one 16-ounce bag of frozen strawberries. I always bake with frozen and save my fresh berries for eating. Feel free to substitute with cherries, raspberries, blackberries, blueberries, peaches; fresh or frozen.

If you’re using fresh fruit, the baking time will likely be dramatically less, by as much as 20 minutes or so. When I used this cake base with fresh peaches, my baking time was a solid 10 minutes less. With all cakes and baking in general, watch your cake and not the clock. Bake until it’s done.

Peanut Butter-Swirled Strawberry Cake - Easy Recipe at averiecooks.com

I suggest tenting your pan at about the 40 minute mark. That simply means laying a sheet of foil across the top of the pan so the surface of the cake doesn’t become overly browned before the interior fully cooks through.

With a pound of juicy fruit inside, it takes awhile to cook through completely.

Peanut Butter-Swirled Strawberry Cake - Easy Recipe at averiecooks.com

As much as I like cream cheese swirls, peanut butter trumps cream cheese. The slight saltiness of the peanut butter complements the juicy, sweet fruit wonderfully well. It’s a cake that reminds me of a PB & J sandwich, but with actual strawberries rather than jelly.

The peanut butter sinks and ‘disappears’ to some extent while baking, so don’t go too crazy with the swirling and start off with thin, wispy swirls. You’ll never see them after the cake is baked.

Embrace those big patches and blobs of peanut butter because they’ll turn into lovely peanut butter valleys during baking.

Peanut Butter-Swirled Strawberry Cake - Easy Recipe at averiecooks.com

I loved this cake so much. I tried to forget about it and put it deep inside my cupboard, thinking out of sight, out of mind. Wrong. I found myself going back to the lightly sweetened cake, with just a fork, straightening out the rows. Again and again.

The wall of soft strawberries that inevitably sink to the bottom of the cake, despite flouring them before baking, is the best part of cake. Dense walls of fruit are the best. Okay, they’re tied with peanut butter valleys.

Peanut Butter-Swirled Strawberry Cake - Easy Recipe at averiecooks.com

It’s good that it’s a small 8-inch cake, and perfect to use up summer fruit or for a shower, brunch, or event you need a fast and fabulous cake.

I said last time that this cake batter has yet to let me down, and that I’d be making more cakes with it. I’ve happily kept my word.

Peanut Butter-Swirled Strawberry Cake - Easy Recipe at averiecooks.com

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Peanut Butter-Swirled Strawberry Cake

By Averie Sunshine
This is one of the best cakes Iโ€™ve ever made. Itโ€™s soft, tender, and exceedingly moist. Thereโ€™s a pound of juicy strawberries baked into an 8-inch cake, creating an abundance of berries in every bite. Itโ€™s like PB & J, in decadent cake form โ€“ with actual berries rather than just jelly. The peanut butter swirls are the perfect slightly salty complement to the lightly sweetened, buttery, juicy cake. The cake is fast and easy to make and comes together with just a whisk. Fresh or frozen strawberries may be used; or substitute with other fruit, fresh or frozen, you have. Itโ€™s one of the best cakes Iโ€™ve ever made.
Prep Time: 10 minutes
Cook Time: 1 hour
Total Time: 1 hour 10 minutes
Servings: 0 one 8x8 pan, 9 generous squares
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Ingredients  

  • 1 cup all-purpose flour + 1 tablespoon for tossing with strawberries
  • ยพ cup granulated sugar
  • 2 teaspoons baking powder
  • ยฝ teaspoon cinnamon
  • pinch salt, optional and to taste
  • 1 large egg
  • ยฝ cup buttermilk
  • โ…“ cup thick, full-fat Greek yogurt or sour cream
  • 3 tablespoons canola or vegetable oil
  • 1 teaspoon vanilla extract
  • 16 ounces strawberries, halved or quartered (I used one 16-ounce bag frozen strawberries; donโ€™t unthaw and add them to the batter frozen; see below in item 6 about using fresh. Optionally, substitute cherries, blueberries, blackberries, raspberries, or peaches; fresh or frozen.)
  • ยผ cup creamy peanut butter, melted

Instructions 

  • Preheat oven to 350F. Line an 8-inch square pan with aluminum foil and spray with cooking spray; set aside.
  • In a large bowl, whisk together 1 cup flour, 3/4 cup sugar, baking powder, cinnamon, optional salt; set aside.
  • In a separate small bowl, whisk together the next 5 wet ingredients (through vanilla).
  • Add the wet mixture to the dry, mixing lightly with a spoon or folding with a spatula until just combined. Lumps will be present and this is okay. Donโ€™t overmix or try to stir them smooth; set aside.
  • In a small bowl, toss the strawberries with 1 tablespoon flour. The flour helps to prevent as much sinking while baking, although given the sheer quantity, some will sink to make room for them all.
  • Gently and briefly fold the fruit into batter. I used frozen berries and added them frozen; do not thaw because frozen fruit runs and bleeds less than if thawed. I let them warm up for about 5 minutes in order to slice them. If using fresh fruit, baking time will be significantly (possibly drastically) less because the fruit is much warmer and wonโ€™t chill down the batter overall, nor will it release any where near the water into the batter that frozen fruit does. Optionally, substitute cherries, blueberries, blackberries, raspberries, or peaches; fresh or frozen.
  • Turn batter out into prepared pan; set aside.
  • In a small microwave-safe bowl, add the peanut butter and heat on high power to melt, about 30 seconds.
  • Evenly drizzle peanut butter over cake. With a toothpick, gently and lightly swirl the peanut butter, but donโ€™t overdo it. The peanut butter โ€˜disappearsโ€™ a bit while baking, so donโ€™t start out with thin lines because youโ€™ll never see them. Some larger patches and โ€˜blobsโ€™ are welcome.
  • Bake until done. I hesitate to give a baking range because you must watch your cake, not the clock. Bake until center is slightly domed and set, golden in color, and a toothpick inserted in the center comes out clean or with a few moist crumbs, but no batter. I baked for 60 minutes total. At the 40 minute mark, I tented with foil (lay a sheet of foil over the top of pan) and recommend this so cake doesnโ€™t become too browned on top before the center cooks through fully. Baking times will range dramatically based on if baking with fresh or frozen berries; possibly ranging from 35 to 65 minutes depending on the temperature of the berries going into the batter and how much water they release.
  • Place pan on a wire rack and allow cake to cool for at least 30 minutes before slicing and serving. Optionally, drizzle more peanut butter over the top or try thisย vanilla cream cheese glaze, this buttery vanilla glaze, this browned butter glaze.
  • Cake will keep airtight at room temperature for up to 5 days.

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Do you have a favorite cake that never lets you down? What do you bake with fruit?

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Please note: I have only made the recipe as written, and cannot give advice or predict what will happen if you change something. If you have a question regarding changing, altering, or making substitutions to the recipe, please check out the FAQ page for more info.

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Comments

  1. Another amazing recipe from Averie Sunshine!I always go to your website for a guaranteed crowd pleaser, The Peanut Butter-Swirled Strawberry Cake was a success.Followed the recipe exactly thanks for the advice, made the browned butter glaze and made special trip to the grocery store for frozen strawberries.Your foodtography is always so beautiful.You inspired me to take a photo of this cake.By the time i went to grab the camera half the cake was gone, i was little disappointment but thats what i call a success!

    1. Oh wow, thanks for the detailed report & glad that it was a success! Thanks for LMK I’m your go-to. That’s nice :) And the fact that half the cake was gone in a flash, awesome!

  2. OOpps i have one more question, out of the three glazes you suggested for the PB&J cake which one would you recommend? Im having a hard time choosing,they all sound soo scrumptious!

  3. Hey Averi soo excited to try this recipe! There was nothing better than a PB&J as a child, perfect compromise for a peanut butter lover and a jam lover aka my father and mother lol.I was wondering if i could substitute 16 ounces of strawberry jam instead of the 16 ounces of frozen strawberries that the recipe calls for?

    1. I think that would make it awfully sweet! I would stick with the frozen berries and maybe do half berries, half jam.

  4. I could eat this all day long. LOVE it! This cake is so good, I made a another one after my husband and I finished the first one. Great recipe!

  5. I almost missed this and just wanted to say it looks awesome! Like pbj but better. Love cakes with tons of fruit.

  6. Outstanding cake, I can’t even imagine all of those berries in this cake, so delicious! Thanks for linking up with What’s Cookin’ Wednesday!

  7. I “straighten” my bars and brownies with a fork too – for the sake of photos, of course. ;)

    Each cake you make looks better than the last! I think I’d fall head over heels for this strawberry-peanut butter combo!

  8. I love this cake base Averie! It certainly doesn’t disappoint ;) And personally, I would never have thought of a pb strawberry cake. But now that you’ve done it, you’re right, it is like pb & j. How classic! This looks so wonderfully dense it’s crazy. Can’t wait to try it!

  9. This sounds HEAVENLY. I love how you described it as PB & J in cake form. Yum!

    1. Also, is there a reason you line the pan with foil? Is it just for ease of removal? And will it effect browning or bake-time if I don’t use foil?

  10. I love this cake, Averie! So many swirl recipes for you lately (those Nutella blondies are still on my mind from Sunday!) and so many yummy cake recipes too. This has to be the best sounding cake I’ve seen in awhile! And with so many strawberries, too. Amazing! I love to pack as much fruit as I can into muffins and the like, so I know I would adore every strawberry packed bite there is! PB&J at its finest. Amazing!

    1. It’s totally like PB&J with real fruit and tons of it. I know you like your berries and this is just loaded with berries. And it’s probably the moistest cake I’ve ever made! I wish I could have shared this cake with you b/c I bet we would have had a great time straightening the rows together :)