1 Egg Cake Recipe With Oil: Light-as-Air Rise Without a Drop of Butter

This 1-egg cake recipe with oil delivers a light-as-air texture without butter, proving you don’t need eggs or dairy for perfect rise. The secret lies in proper mixing techniques and oil’s ability to tenderize while the single egg binds everything together—no heavy, dense crumbs here. I developed this after years of testing oil-based cakes, and the results are consistently fluffy, moist, and foolproof.

The beauty of this recipe is its simplicity: just 5 key ingredients (flour, sugar, oil, egg, and leavening) come together in a method that ensures maximum air incorporation. Unlike traditional butter cakes, the oil keeps the texture tender and moist for days, while the egg provides structure without heaviness. Perfect for vanilla, chocolate, or citrus flavors, this cake adapts effortlessly to your preferences.

What sets this apart is the technique—folding dry ingredients gently to preserve air while the oil creates a velvety crumb. Baked at 350°F for 25-30 minutes, it emerges golden with a springy bounce. The result? A cake that’s light enough to float, yet sturdy enough to slice neatly—ideal for celebrations or everyday treats.

Whether you’re avoiding butter, reducing eggs, or just love a moist, airy texture, this recipe delivers. The same method works for cupcakes or layer cakes, making it versatile for any occasion. Let’s bake!

Ingredients for 1 egg cake recipe with oil

Five essential ingredients transform into a cloud-like cake—no butter, no dairy, just pure oil-based magic.

The flour is your foundation—King Arthur or Gold Medal brands yield the best results due to their high protein content. For the sugar, superfine is ideal but regular granulated works if pulsed in a food processor. The olive oil should be light and fruity—avoid heavy varieties that can overpower delicate flavors. I source my vanilla extract from Burlap & Barrel for maximum potency, but any pure vanilla will suffice. The milk adds moisture and tenderness; warming it slightly helps it blend seamlessly into the batter.

No vanilla extract? Almond extract at half the amount works in a pinch, though the flavor differs. Substitute the milk with unsweetened almond milk if needed, though the texture may be slightly less tender. For a citrus twist, replace the lemon zest with orange zest—just reduce to half the quantity to avoid overpowering. The baking powder must be fresh; if your container is older than six months, replace it entirely for reliable results. The olive oil can be swapped for avocado oil or vegetable oil, though olive oil provides the most authentic flavor.

Store the dry ingredients (flour, sugar, baking powder) in an airtight container for up to 6 months, while the olive oil and vanilla extract can last 12 months in a cool, dark place. The batter should be used immediately for best results, but it can be refrigerated for up to 24 hours if covered tightly. Once baked, the cake keeps well for 3 days at room temperature or 5 days refrigerated, though it's best enjoyed fresh for maximum moisture.

Step-by-step instructions for light-as-air oil cake

This method delivers a tender, moist crumb with perfect rise using only oil—no butter needed.

Preheat your oven to 350°F and position a rack in the center. Grease two 8-inch round cake pans generously with the 1 cup extra-virgin olive oil, using half for each pan. Line the bottoms with parchment circles cut to fit, then dust lightly with the 2.5 cups all-purpose flour to prevent sticking. Tap out any excess flour—you want just enough to create a barrier, not a thick coating.

Warm the 0.5 cup whole milk in a small saucepan over low heat until it reaches about 100°F—just warm to the touch. This slight warming helps the milk emulsify better with the oil, creating a smoother batter. While the milk warms, measure out the 1.75 cups granulated sugar and the 1 tbsp lemon zest in separate bowls. The sugar should be superfine if possible for even distribution throughout the cake.

In a medium bowl, sift together the 2.5 cups all-purpose flour, 2 tsp baking powder, and 0.5 tsp salt. Whisk briskly for about 30 seconds to aerate the flour and ensure the baking powder is evenly distributed. This step prevents dense pockets in your cake—think of it as giving your batter a head start on rise. Set this mixture aside while you prepare the wet ingredients.

Add the warm 0.5 cup whole milk to the 1 cup extra-virgin olive oil in a separate large bowl. Whisk vigorously for about 1 minute until the mixture becomes emulsified and slightly thickened. The oil should be fully incorporated with no visible separation. This emulsion is what creates the cake's signature moist texture without butter.

With the mixer on low speed, gradually add about one-third of the flour mixture to the oil-milk emulsion. Mix just until combined, then add another third and mix again. The goal here is to create a smooth batter without developing gluten—overmixing leads to a tough cake. After adding two-thirds of the flour, pour in the 1 whole large egg, the 1.75 cups granulated sugar, and the 1 tbsp vanilla extract.

Mix on low speed for another 30 seconds until just combined, then gently fold in the remaining flour mixture by hand with a spatula. Finally, stir in the 1 tbsp lemon zest until evenly distributed. The batter should be thick but pourable—if it's too stiff, add 1-2 tablespoons of milk to adjust. Let the batter rest for 10 minutes at room temperature while the oven finishes preheating.

Divide the batter evenly between the two prepared pans, filling each about two-thirds full. Tap the pans gently on the counter to release any air bubbles. Bake for 25-30 minutes, or until a toothpick inserted into the center comes out clean and the edges pull away slightly from the pan. The top should be golden brown, not dark—this indicates proper browning without overcooking.

Here's the key: Rotate the pans halfway through baking (after 15 minutes) for even heat distribution. The cake should rise about 1 inch above the pan edge when done. If the top browns too quickly, tent loosely with foil after 20 minutes to prevent over-browning while allowing the cake to finish cooking through.

Remove the cakes from the oven and let them cool in the pans for 10 minutes. Then, run a thin knife around the edges to loosen, and invert onto a wire rack to cool completely. This gradual cooling prevents cracking and ensures the crumb sets properly. Serve at room temperature for the best texture—warm cake can feel slightly dense.

The finished cake should have a fine, even crumb with a moist but not greasy texture. The lemon zest adds a bright citrus note that cuts through the richness of the oil, while the vanilla enhances the overall flavor. For best results, store leftovers in an airtight container at room temperature for up to 3 days, or refrigerate for up to 1 week—though I doubt you'll have any left!

Dietary considerations for this dish

Gluten-Free Adaptation

Replace the 2.5 cups all-purpose flour with a 1:1 gluten-free baking flour blend like King Arthur Gluten-Free Measure for Measure. Add 1 tsp xanthan gum to improve structure since gluten-free flours lack natural elasticity. For best results, whisk the dry ingredients for 1 full minute to fully aerate the blend. The texture will be slightly denser but still moist—expect a 10-15 minute longer bake time at 350°F.

Dairy-Free Options

Swap the 0.5 cup whole milk for unsweetened almond milk or oat milk—both work well, though almond milk yields a slightly drier crumb. For extra richness, add 1 tbsp melted coconut oil to the wet ingredients. The cake remains tender, though the texture may be marginally less velvety. Test with 1 tbsp extra oil if the batter seems too thick when substituting.

Egg Substitutes

For a vegan version, replace the 1 whole egg with 1 tbsp ground flaxseed mixed with 3 tbsp water (let it sit for 5 minutes to thicken). Alternatively, use ¼ cup unsweetened applesauce for moisture, though the texture will be slightly denser. The cake will still rise but may lack the delicate structure of the original. For best results, reduce the baking powder to 1.5 tsp to compensate for the egg's leavening properties.

Lower Sugar Version

Reduce the 1.75 cups granulated sugar to 1.25 cups and replace the remaining 0.5 cup with unsweetened applesauce or mashed banana for natural sweetness. The cake will be slightly less tender but still moist. For added flavor, boost the vanilla extract to 2 tbsp or add 1 tsp cinnamon to the dry ingredients. This adaptation works best for chocolate or spiced variations.

Nut-Free Considerations

If avoiding nuts entirely, skip almond milk substitutions and use coconut milk (full-fat for creaminess). Ensure all vanilla extracts are nut-free—brands like McCormick Pure Vanilla are typically safe. For extra moisture, add 1 tbsp extra oil to the wet ingredients. The cake remains nut-free while maintaining its signature tenderness, though the flavor may lean slightly coconutty if using coconut milk.

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