Spanish Bar Cake Recipe: The Easiest Slice of Sunshine!
Imagine biting into a dense, moist cake bursting with the bright flavors of citrus and almond, all with a subtle hint of olive oil. That’s exactly what you get with this incredibly easy Spanish Bar Cake! Unlike fussy layer cakes or delicate pastries, this recipe is wonderfully forgiving and requires minimal effort, making it perfect for beginner bakers and seasoned pros alike. This cake is a delightful treat for breakfast, brunch, afternoon tea, or even dessert. Its rustic charm and vibrant flavors are sure to impress, and the simplicity of the recipe means you can whip it up in no time. Get ready to transport yourself to the sunny shores of Spain with every delicious bite!
Why This Recipe Works
This recipe’s success lies in its simplicity and clever use of ingredients. Here’s why it consistently delivers a fantastic result:
- Olive Oil Magic: Using olive oil instead of butter creates a uniquely moist and tender crumb. The olive oil also adds a subtle fruity note that complements the citrus beautifully.
- Almond Flour Power: Almond flour contributes to the cake’s dense, yet delicate texture and imparts a lovely nutty flavor that enhances the overall taste profile. It also makes this cake gluten-free friendly (always check your almond flour for potential cross-contamination).
- Citrus Zest Zest: The abundance of citrus zest (orange and lemon, in this recipe) infuses the cake with an incredible aroma and bright, refreshing flavor. Don’t skimp on the zest!
- One-Bowl Wonder: This recipe is designed for convenience. You can mix everything in one bowl, minimizing cleanup and maximizing your baking enjoyment.
- Forgiving Nature: Unlike some cakes that require precise measurements and techniques, this Spanish Bar Cake is incredibly forgiving. A slight overmix or a minor variation in ingredient amounts won’t ruin the final product.
Ingredients
- 1 ½ cups (180g) almond flour
- ¾ cup (150g) granulated sugar
- 2 large eggs
- ½ cup (120ml) extra virgin olive oil
- ¼ cup (60ml) milk (any kind works – dairy or non-dairy)
- Zest of 1 large orange
- Zest of 1 lemon
- 1 teaspoon baking powder
- ½ teaspoon almond extract (optional, but recommended)
- Pinch of salt
- Optional: Powdered sugar for dusting

Instructions
- Preheat and Prep: Preheat your oven to 350°F (175°C). Grease and flour an 8×8 inch square baking pan. You can also line it with parchment paper, leaving an overhang for easy removal.
- Combine Dry Ingredients: In a large bowl, whisk together the almond flour, sugar, baking powder, and salt. Make sure there are no lumps of almond flour.
- Incorporate Wet Ingredients: Add the eggs, olive oil, and milk to the dry ingredients. Mix until just combined. Be careful not to overmix.
- Add Flavor Boosters: Stir in the orange zest, lemon zest, and almond extract (if using). Mix until evenly distributed.
- Pour and Bake: Pour the batter into the prepared baking pan and spread it evenly.
- Bake to Perfection: Bake for 30-35 minutes, or until a toothpick inserted into the center comes out clean or with a few moist crumbs attached.
- Cool Completely: Let the cake cool in the pan for at least 15 minutes before transferring it to a wire rack to cool completely.
- Dust and Serve: Once cooled, dust with powdered sugar (optional) and cut into bars. Enjoy!
Tips for Success
- Use High-Quality Olive Oil: The flavor of the olive oil will shine through in the cake, so choose a good quality extra virgin olive oil with a pleasant fruity taste.
- Fresh Zest is Key: Use freshly grated citrus zest for the best flavor. Avoid using the white pith, as it can be bitter.
- Don’t Overmix: Overmixing can lead to a tough cake. Mix the batter until just combined, and stop as soon as there are no streaks of flour remaining.
- Check for Doneness: The baking time may vary depending on your oven. Start checking for doneness at 30 minutes and bake until a toothpick inserted into the center comes out clean.
- Cool Completely: Allow the cake to cool completely before cutting it into bars. This will prevent it from crumbling.
- Experiment with Flavors: Feel free to experiment with different citrus fruits, such as grapefruit or lime. You can also add a sprinkle of chopped almonds or a drizzle of honey on top before baking.
- Gluten-Free Note: While almond flour is naturally gluten-free, always check the packaging to ensure it was processed in a gluten-free facility if you are concerned about cross-contamination.
Storage Instructions
This Spanish Bar Cake is best stored at room temperature in an airtight container. It will stay fresh for up to 3-4 days. You can also freeze the cake for longer storage. Wrap it tightly in plastic wrap and then in foil, and it will keep for up to 2 months. Thaw it overnight in the refrigerator before serving.

FAQ
- Can I use regular flour instead of almond flour? While technically possible, the texture and flavor will be significantly different. Almond flour contributes to the cake’s unique moistness and nutty flavor. If you must substitute, use all-purpose flour, but reduce the amount slightly (about 1 ¼ cups) and be prepared for a denser cake.
- Can I reduce the amount of sugar? You can reduce the sugar slightly, but keep in mind that sugar contributes to the cake’s moisture and structure. Reducing it too much may result in a dry or crumbly cake.
- Can I use a different size pan? Yes, you can use a different size pan, but you’ll need to adjust the baking time accordingly. A larger pan will require a shorter baking time, while a smaller pan will require a longer baking time.
- My cake is dry. What did I do wrong? Overbaking is the most common cause of a dry cake. Make sure to check for doneness frequently and remove the cake from the oven as soon as a toothpick inserted into the center comes out clean. Also, ensure you’re not overmeasuring the almond flour.
- My cake sunk in the middle. What happened? This could be due to several factors, including using expired baking powder, not preheating the oven properly, or opening the oven door too frequently during baking.
Conclusion
This Spanish Bar Cake recipe is a true gem. Its simplicity, delicious flavor, and forgiving nature make it a winner for any occasion. The combination of olive oil, almond flour, and citrus zest creates a truly unique and unforgettable cake that will transport you to the sun-drenched landscapes of Spain with every bite. So go ahead, gather your ingredients, and bake up a slice of sunshine today! You won’t be disappointed.