Desserts
This 1-egg cake recipe with oil delivers effortlessly moist layers without a single bowl or mixer—just a fork and a whisk. The secret lies in oil's ability to tenderize while keeping the texture light, all while using half the eggs of traditional recipes. I developed this method after years of baking failures with dry, dense results, and it finally cracked the code for foolproof sponge cake.
What makes this recipe stand out is its simplicity: no creaming butter, no folding eggs, and no waiting for room temperature ingredients. The oil keeps the crumb velvety without needing special techniques, while a single egg provides enough structure for perfectly springy layers. Baking time is minimal—just 25-30 minutes—and the result is a cake that stays moist for days, even without frosting.
The beauty of this method is its versatility. Use it for a simple vanilla sponge, add citrus zest for brightness, or fold in chocolate for depth—every variation maintains that signature tender crumb. The cake's neutral flavor also makes it ideal for soaking in syrups or pairing with fresh fruit, ensuring it works for both casual desserts and special occasions.
Perfect for beginners or busy bakers, this recipe proves you don't need complicated methods to achieve restaurant-quality results. The oil-based approach eliminates common pitfalls like overmixing or dryness, delivering a consistently perfect cake with minimal effort. Let's get baking!
Ingredients for 1 egg cake recipe with oil
Six simple ingredients transform into a perfectly moist cake with minimal effort and no mixing required.
| Ingredient | Amount | Notes |
|---|---|---|
| All-Purpose Flour 🌾 | 1 ½ cups | Sifted for optimal texture |
| Granulated Sugar 🍚 | ¾ cup | White or light brown |
| Extra-Virgin Olive Oil 🫒 | ½ cup | Light variety preferred |
| Large Egg 🥚 | 1 whole | Room temperature preferred |
| Unsalted Butter 🧈 | ¼ cup | Cold, cubed for texture |
| Vanilla Extract 🌿 | 1 tbsp | Pure vanilla preferred |
| Baking Powder 🧂 | 1 ½ tsp | Diamond Crystal brand |
| Salt 🧂 | ¼ tsp | Fine sea salt |
| Whole Milk 🥛 | ¼ cup | Room temperature |
| Lemon Zest 🍋 | 1 tbsp | Freshly grated |
| Lemon Juice 🍋 | 1 tbsp | Freshly squeezed |
| Unsweetened Applesauce 🍎 | ¼ cup | For added moisture |
The extra-virgin olive oil is the cornerstone of this recipe—its light variety ensures a delicate texture without overpowering the cake's flavor. For optimal quality, source light olive oil from specialty stores like Whole Foods or Trader Joe's, where you can find brands like Colavita or Bertolli. The unsalted butter should be cold and cubed to maintain structure, while the Diamond Crystal baking powder guarantees reliable leavening. Fresh lemon zest adds brightness, so avoid pre-grated containers—zest it yourself for maximum flavor. The applesauce acts as a natural tenderizer, keeping the crumb velvety without altering the cake's neutral profile.
No vanilla extract? Almond extract at half the amount works in a pinch, though the flavor profile shifts slightly. Substitute light corn syrup for the applesauce if needed—it maintains moisture but lacks the fruit undertones. For a nut-free option, replace the olive oil with avocado oil (use the same quantity). The milk can be swapped for almond milk if necessary, though the cake may be slightly less tender. If your flour lacks baking powder, add 1.5 tsp baking soda along with 1 tsp vinegar to the milk for leavening. Always measure flour by spooning it into the cup and leveling—never scooping directly from the bag.
Store the cake in an airtight container at room temperature for up to 3 days for optimal freshness, or refrigerate for 1 week if using frosting. For longer storage, wrap tightly in plastic wrap and freeze for up to 3 months. The cake's neutral flavor makes it ideal for soaking in syrups—warm maple syrup or orange liqueur work beautifully. To maintain moisture, slice only when ready to serve, and cover any leftovers with a damp towel. This method ensures a consistently perfect cake with minimal effort, perfect for both casual desserts and special occasions.
Why You'll Love This Recipe
- Four-Ingredient Magic: The name’s right—just flour, sugar, olive oil, and one egg. That’s it. I swear, I’ve made this on days when my pantry looked like a warzone, and it still came out golden and tender. No measuring cups fighting for space, no forgotten spices.
- Rich Without Fuss: Between us, that single egg and olive oil create a moist crumb that tastes like it’s been baked for hours. The butter? Just a whisper—enough to keep it from drying out, but not so much it turns into a dense brick. Honestly, the first time I bit into it, I thought, “Wait, is this supposed to taste this good?”
- Breakfast or Dessert: I’ve served this cold with tea as a snack, warmed with jam for a lazy breakfast, and even as a quick cake for a birthday—no one ever questioned it. The neutral flavor lets it play any role, and the texture holds up whether you’re slicing it fresh or reheating leftovers.
- Zero-Waste Win: This recipe uses what you’ve got, and what you don’t is minimal. A single egg, a splash of olive oil, a handful of flour—no partial sticks of butter or half-used cans of frosting here. And the leftovers? They last days in the fridge, perfect for when you’re too tired to bake again. My secret weapon for when life gets busy.
Step-by-step instructions for 1 egg cake recipe with oil
This method delivers tender, moist layers without overmixing—just precise technique and patience.
Prepare the Wet Ingredients
In a medium bowl, whisk together the 0.5 cup extra-virgin olive oil and 0.75 cup granulated sugar until fully combined. The mixture should be smooth with no visible streaks. Add the 1 whole large egg, whisking vigorously for 1-2 minutes until the mixture lightens noticeably in color and thickens slightly.
This step incorporates air into the batter, which creates the cake's tender crumb. I like to use a hand mixer here for efficiency, but a whisk works just as well if you're patient. The egg should be at room temperature for best results—it emulsifies more smoothly with the oil.
Add Citrus and Moisture Components
In a separate small bowl, combine the 1 tbsp lemon zest, 1 tbsp lemon juice, 0.25 cup unsweetened applesauce, and 0.25 cup whole milk. Whisk until the zest is fully dispersed and the mixture is homogeneous. Pour this into the wet ingredient bowl and whisk again for 30 seconds to fully integrate.
The citrus and applesauce serve dual purposes: they add moisture to prevent dryness and infuse subtle brightness that balances the richness of the oil. The zest should be finely grated—no large chunks. This is where the cake gets its signature tender quality without needing extra eggs.
Incorporate Dry Ingredients Gently
In a separate bowl, sift together the 1.5 cups all-purpose flour, 1.5 tsp baking powder, and 0.25 tsp salt. Add the 0.25 cup cold unsalted butter (cut into small cubes) and use a fork or pastry cutter to work it into the flour until you have a coarse crumb texture with pea-sized butter pieces remaining.
With the mixer on low speed, gradually add the dry ingredients to the wet mixture. Mix just until combined—you should still see flour streaks and the batter should be thick but pourable. Overmixing develops gluten, which leads to tough cake. Stop as soon as all ingredients are incorporated.
Fold in Vanilla and Prepare for Baking
Add the 1 tbsp vanilla extract to the batter and gently fold it in with a spatula, being careful not to incorporate additional air. Transfer the batter to a prepared 9-inch round cake pan lined with parchment paper and lightly greased with oil. Tap the pan gently on the counter 3-4 times to remove any air bubbles.
The vanilla should be pure extract, not imitation, for the best flavor development. Don't worry if the batter looks thick—it's designed this way to create a moist crumb. The tapping step prevents sinkholes in the center of your cake.
Bake to Perfect Doneness
Preheat your oven to 350°F. Place the prepared cake pan in the center rack and bake for 35-40 minutes, or until a toothpick inserted into the center comes out clean with just a few moist crumbs clinging to it. Rotate the pan halfway through baking for even heat distribution.
Here's the key: the cake should spring back when gently pressed in the center. If it browns too quickly, tent with foil. The internal temperature should reach 210°F. Let the cake cool in the pan for 10 minutes, then transfer to a wire rack to cool completely before slicing.
Pro Tips For Making 1 Egg Cake Recipe With Oil
- Preheat Pan Properly: Use a medium-low heat setting and let the pan warm for 3-4 minutes before adding the batter—this prevents sticking and ensures even cooking. I learned this the hard way when my first attempt with a cold pan left me scraping cake off the bottom like it was glued there.
- Whisk Egg First: Beat the egg with the sugar until it’s fully emulsified and slightly thickened before adding flour—this makes the batter smoother and the cake lighter. I used to just crack the egg in and mix; now the texture is noticeably better.
- Don’t Overmix: Stir the flour into the egg mixture just until combined—overmixing develops gluten and turns your cake dense. Stop when you see a few dry spots; the heat will finish the job. (Yes, even if it looks lumpy.)
- Use Room-Temp Butter: Let the unsalted butter sit out for 20-30 minutes before mixing—it blends more evenly into the batter and gives a richer texture. Cold butter creates pockets that won’t melt right, and you’ll end up with a greasy mess instead of a tender cake.
Regional styles of these flavors
Japanese Melon Pan
This Japanese-inspired adaptation replaces the lemon zest with 1 tbsp matcha powder (sifted) and 1 tbsp honey for sweetness. The cake's exterior gets a crisp cookie-like crust by brushing with 1 egg white mixed with 1 tbsp sugar before baking. Serve warm with kinako (roasted soybean flour) dusted on top for a nutty finish. 🌸
Southern Style Buttermilk Cake
Swap the olive oil for 0.5 cup melted butter, replace lemon juice with 0.5 cup buttermilk, and add 1 tsp baking soda to the dry ingredients. Fold in 0.5 cup chopped pecans for texture. Top with a honey-whiskey drizzle (mix 2 tbsp honey and 1 tbsp bourbon) after baking. This version stays moist for 5 days when stored in an airtight container. 🥄
Italian Olive Oil Cake
Boost the olive oil to 0.6 cup and add 1 tbsp orange zest plus 1 tbsp Grand Marnier for depth. Fold in 0.5 cup dark chocolate chunks (60% cocoa) after mixing dry ingredients. Brush the top with simple syrup (equal parts sugar and water, heated until dissolved) while warm. Serve with espresso for a classic Italian pairing. 🍫
German Butterkuchen Twist
Replace the applesauce with 0.25 cup sour cream and add 1 tsp cinnamon to the dry ingredients. Top with powdered sugar and sliced almonds before baking. The cake develops a caramelized crust at 375°F for 30 minutes, then finishes at 350°F for 10 minutes. Perfect with black forest jam or whipped cream. 🍯
Latin American Pan de Coco
Use 0.5 cup coconut oil instead of olive oil, and fold in 0.5 cup shredded coconut (toasted for 5 minutes in a dry pan). Add 1 tsp vanilla bean paste and 0.25 tsp ground cinnamon. The cake's texture becomes denser but ultra-moist, ideal for soaking in guava syrup. Garnish with extra toasted coconut flakes. 🥥
Scandinavian Kardemummaka
Infuse the milk with 1 tsp cardamom pods (crushed) while heating, then cool before using. Replace lemon zest with 1 tbsp orange zest and add 0.5 tsp ground cardamom to the dry ingredients. Top with powdered sugar and serve with lingonberry jam for a bright, spiced twist. This version keeps well for 7 days refrigerated. ❄️
Nutrition facts
Frequently asked questions
Why does this recipe use oil instead of butter?
Oil creates a moist, tender crumb without needing creaming—perfect for delicate cakes. It stays liquid longer than butter, ensuring even distribution and preventing dryness. Plus, it's easier to mix by hand! The olive oil also adds subtle richness that butter can't match in this light recipe.
Can I make this cake without a mixer?
This recipe is designed for hand mixing. Use a whisk for the wet ingredients and a fork for combining dry ingredients. The key is gentle folding—just until combined—to keep the texture tender. A rubber spatula helps smooth the batter without overmixing.
What if I don't have applesauce?
Use 0.25 cup plain yogurt or 0.25 cup mashed banana as substitutes—they add moisture and natural sweetness. For a neutral option, try 0.25 cup light corn syrup, though it lacks fruit undertones. The cake will still be tender but slightly denser.
How do I know when the cake is fully baked?
Insert a toothpick into the center—it should come out with just a few moist crumbs (not wet batter). The cake should also spring back slightly when pressed gently. For extra accuracy, check the internal temperature: it should reach 210°F. Overbaking dries out the cake, so remove it when it's just done.
Can I bake this in a different pan size?
Yes, but adjust the baking time. For an 8-inch pan, bake 25-30 minutes; for a 10-inch pan, bake 35-40 minutes. The cake should be tested for doneness with a toothpick regardless of pan size. Grease the pan well to prevent sticking, especially if using a nonstick pan.