This buckwheat olive oil cake has a super fine, plush crumb and a rich chocolate ganache enhanced with toasted milk powder. The perfect use for a high-quality olive oil and your favorite dark chocolate!

This olive oil cake was inspired by attending the Taste of Europe Challenge in Grand Central Terminal, a cooking challenge featuring cheese, chocolate and olive oil from Europe.
It was a dream afternoon! As two contestants competed in a head-to-head challenge using various products from Europe to win over the judges, we tasted five different cheeses, three different olive oils and 5 different chocolates from various countries including Ireland, Estonia, Germany and The Netherlands. The event was part of the More Than Food campaign, celebrating the traditions, unique flavors, and stories behind European food and drinks.


A few things I learned during the tastings:
- Olive oil tastings often use red or blue tasting glasses because color doesn’t correlate to quality–harvest time and technique can affect color but not necessarily taste.
- Olive oil should be tasted slightly warmed to bring out all the flavors. A high-quality oil should taste peppery in the back of your throat and might make you cough slightly.
- To properly taste olive oil, you should sip it, leave it on your tongue and sip air through your mouth before swallowing.
- Cocoa-dusted truffles use the cocoa on the outside to help intensify the aroma at first bite.
I was really struck by how pure and rich really high-quality milk chocolate can taste, especially as someone who prefers dark chocolate. I left feeling inspired to make something that could showcase the olive oil I tried and immediately thought of one of my favorites from the olive oil cake bake off.
Swapping a little over 40% of the flour in America’s Test Kitchen’s olive oil cake for buckwheat flour gives this cake a nutty flavor that pairs so well with the chocolate ganache. As a gluten-free flour, buckwheat flour makes for a slightly more tender crumb in what is already a very finely-crumbed, plush cake. To me, this is a dream cake texture and would be the perfect finish to a dinner party or brunch!

Ingredients
This olive oil cake is super easy to make with just a few pantry staples.
- Olive oil: This is the main source of fat and flavor in the cake. Make sure to use an olive oil that you like the taste of–we sampled Toscano PGI extra virgin olive oil from Italy, Priego de Cordoba PDO from Spain and Chania Kritis PGI from Greece at the event and all would be great choices!
- Eggs: I always bake with large eggs; you can use eggs cold from the fridge.
- Buckwheat flour: Using a portion of buckwheat gives this cake a fun speckled appearance and nutty flavor.
- All-purpose flour: All-purpose flour in combination with buckwheat flour is crucial to provide structure since buckwheat flour doesn’t contain any gluten.
- Granulated sugar: This works to sweeten the cake (of course!) and contributes to a tender crumb.
- Milk: You can use any type of milk here–I used whole milk, but 2% or an alternative milk would also work.
- Dark chocolate: I used a 70% chocolate for this ganache. You can use any percentage of chocolate you like–use milk chocolate for a sweeter, lighter ganache and a higher cacao percentage for a darker, more bitter ganache. I recommend considering a Belgian chocolate for an exceptionally smooth and rich experience.
- Dry milk powder: Any fat percentage of milk powder will work. This is optional as it will make the ganache slightly grainier in texture. However, I like the additional flavor toasted milk powder adds to the ganache.
How to make this olive oil cake

Step 1: Whip eggs and sugar together until lightened and very foamy, about 3 minutes.

Step 2: Steadily stream in the olive oil.

Step 3: Sprinkle over the baking powder and salt and mix to incorporate. Add buckwheat flour and mix to incorporate. Finally, add the all-purpose flour and mix to incorporate.

Step 4: With the mixer on medium low, stream in the milk until you have a smooth batter.

Step 5: Pour batter in a greased 9″ pan lined with parchment paper and bake at 350 F for 45-50 minutes, until center springs back under your finger and a tester comes out clean or with a few moist crumbs.

Step 6: Toast milk powder in a skillet until golden.

Step 7: Warm cream and stir in milk powder. Pour over the chopped chocolate and let sit for a minute to melt. Stir until smooth, then put in the fridge to chill, around 1 hour.

Step 8: Whip the ganache until light and fluffy and frost the cooled cake. Top with more olive oil and flaky salt.

Make ahead and storage
This cake can be made a day ahead and stored at room temperature, wrapped well. Frost right before serving.
Store any leftovers in an airtight container in the fridge for up to 4 days. I recommend letting the cake sit at room temperature for 10-15 minutes before enjoying!
Buckwheat Olive Oil Cake
Ingredients
Olive oil cake
- 3 (150 g) large eggs
- 1 cup + 2 tbsp (225 g) granulated sugar
- 3/4 cup (150 g) olive oil
- 1 tsp baking powder
- 3/4 tsp kosher salt
- 3/4 cup (90 g) buckwheat flour
- 1 cup (120 g) all-purpose flour
- 3/4 cup (170 g) milk
Chocolate ganache
- 3 tbsp (26 g) milk powder, optional adds toasty milk flavor but also a bit of graininess
- 1/2 cup (114 g) heavy cream
- 4 oz (113.4 g) dark chocolate, chopped
For serving
- extra virgin olive oil, for drizzling
- flaky salt, for garnish
Instructions
Olive oil cake
- Preheat oven to 350 and grease and line a 9" cake pan with parchment. In the bowl of a stand mixer fitted with a whisk attachment, combine 3 (150 g) large eggs and 1 cup + 2 tbsp (225 g) granulated sugar. Mix on low to combine, then increase speed to medium and whip for 3 minutes until lightened and very foamy.
- With the mixer on medium-low, steadily stream in 3/4 cup (150 g) olive oil. Sprinkle 1 tsp baking powder and 3/4 tsp kosher salt over the top and combine. Add 3/4 cup (90 g) buckwheat flour and mix to combine. Add 1 cup (120 g) all-purpose flour and mix to just combine. Finally, stream in 3/4 cup (170 g) milk and mix on medium-low until batter is smooth.
- Pour batter into prepared pan and bake for 45-50 minutes, or until the edges are golden and the center springs back under your finger.
- While the cake is baking, toast 3 tbsp (26 g) milk powder, optional in a small skillet until golden, if using.
- Heat 1/2 cup (114 g) heavy cream until steaming (either ~1 minute in the microwave or on the stovetop). Place 4 oz (113.4 g) dark chocolate, chopped in a large heat-proof bowl and add the toasted milk powder. Pour the heavy cream over and let stand for 1 minute, then whisk until melted. Place in the fridge and chill for at least 1 hour.
- Using electric beaters, whip the ganache until light and fluffy and spread over the cooled cake. Top with a drizzle of extra virgin olive oil and flaky salt before serving.



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