All-In-One Cake Recipe: Mix-and-Bake Magic in One Bowl

This all-in-one cake recipe eliminates the guesswork with a foolproof method that delivers moist, tender layers without layers of bowls or mess. ✨ The secret lies in a single-bowl approach where every ingredient—flour, sugar, eggs, and even flavorings—comes together seamlessly, reducing prep time to just 10 minutes before baking. Perfect for beginners or busy bakers, this recipe guarantees a cake so consistently delicious, you’ll wonder why you ever bought boxed mixes.

What sets this cake apart is its balance of simplicity and professional results. No folding dry ingredients into wet or worrying about overmixing—just combine, pour, and bake. The cake rises evenly with a fine crumb texture, and the optional buttercream frosting (or cream cheese filling) adds that restaurant-quality finish without complicating the process. Whether you’re celebrating a birthday or craving a midweek treat, this recipe delivers every time.

The magic happens in the oven, where the cake bakes to a golden, even tone with a tender crumb that stays moist for days. The flavor is rich but not overpowering, thanks to a precise ratio of vanilla and a pinch of salt that enhances every bite. Serve it plain, frosted, or layered with fresh berries—this cake adapts to any occasion while keeping the focus on effortless perfection.

Best of all, this recipe scales effortlessly for any gathering size. Double the batch for a crowd, or halve it for a single-serving treat. The instructions are clear, the ingredients are accessible, and the results are consistently impressive. Ready to bake a cake that’s as easy as it is extraordinary?

Ingredients for all in one cake

Twelve essential ingredients transform into a foolproof cake with no mixing hassles.

The flour choice matters here. All-purpose delivers reliable structure, but cake flour (if you have it) creates a finer crumb—worth the splurge for special occasions. King Arthur or Gold Medal brands are my go-to for consistent results. For the butter, Plugrá or Land O’Lakes work perfectly, but never use margarine. Room temperature is critical: press a finger into the butter—it should dent slightly but hold the shape. The eggs should be room temperature too, so take them out of the fridge 30 minutes before baking. Diamond Crystal baking powder is essential—it’s double-acting, so the cake rises both during and after baking.

No vanilla extract? Almond extract at half the amount works in a pinch, but the flavor will differ. Substituting vanilla bean paste for the extract? Use 1.5 teaspoons instead. For dairy-free options, unsweetened almond milk replaces whole milk, though texture may vary slightly. The buttercream can be made with vegetable shortening if you prefer a more stable frosting—just reduce the powdered sugar slightly to compensate. If you’re scaling this up, increase the buttercream by 25% for a more generous layer. For a richer flavor, add 1 teaspoon of lemon zest to the batter, but omit the salt in that case to balance the acidity.

Store the dry ingredients—flour, sugar, baking powder—in airtight containers in a cool, dark place for up to 6 months. Butter and eggs should stay refrigerated until use, but bring them to room temperature 30 minutes before baking. The baked cake keeps well at room temperature for 3 days, wrapped tightly in plastic. For longer storage, freeze slices for up to 3 months—thaw at room temperature before serving. The buttercream can be made a day ahead and stored in the fridge; simply re-whip before using. Double the recipe? Use two 9-inch pans or one 10-inch pan for even baking.

Step-by-step instructions for all-in-one cake mix-and-bake magic

This one-bowl method delivers a perfectly moist cake with minimal cleanup—just follow these precise steps.

Start by sifting the 2.25 cups all-purpose flour and 2 tsp baking powder together in a medium bowl. This removes lumps and ensures an even, tender crumb. In a separate bowl, whisk the 2 cups granulated sugar, 1 cup softened unsalted butter, and 0.5 cup vegetable oil until fully combined and smooth. The butter should be soft enough to leave a slight indentation when pressed—this creates that signature tender crumb.

Add the 3 whole large eggs one at a time, mixing well after each addition. Then stir in the 1 cup room-temperature whole milk, 2 tsp pure vanilla extract, and 0.5 tsp fine sea salt. The mixture should be thick but pourable—if it looks too stiff, add 1-2 tablespoons milk to loosen it. This step guarantees a cake with proper rise and moisture balance.

Gradually add the sifted dry ingredients to the wet mixture, mixing just until combined. I use a silicone spatula to scrape the bottom and sides of the bowl—this ensures no flour pockets remain. Avoid overmixing; stop as soon as the batter is uniform with a few small flour streaks visible. Overmixing develops gluten, which makes cakes tough instead of tender.

For an even finer crumb, fold in the 0.5 cup cake flour at the end. This optional step creates a lighter texture, especially if you prefer a delicate cake. The batter should be thick but smooth enough to pour. If using, fold in any optional mix-ins like chocolate chips or nuts at this stage.

Preheat your oven to 350°F and grease a 9-inch round cake pan or line it with parchment paper. Pour the batter into the prepared pan and smooth the top with a spatula. Bake for 30-35 minutes until a toothpick inserted into the center comes out clean and the edges are golden brown. The cake should spring back slightly when gently pressed in the center.

I recommend checking at the 25-minute mark—ovens vary, and you want to catch it at peak doneness before it dries out. The cake should have a slightly domed top with a crackly crust. Let it cool in the pan for 10 minutes, then transfer to a wire rack to cool completely before frosting.

For the classic buttercream, beat the 1.5 cups cold heavy whipping cream until soft peaks form. Gradually add the 4 cups powdered sugar, mixing on low speed until combined. Increase speed to medium and beat for 3-4 minutes until smooth and fluffy. Add 1 tsp vanilla extract if desired for extra flavor.

Spread the buttercream over the cooled cake layer or use it to fill between layers if making a layered cake. The cold cream ensures stability, while the powdered sugar gives that signature light, sweet finish. For extra shine, brush the cake with a simple syrup made from equal parts sugar and water heated until dissolved.

Let the cake rest at room temperature for 30 minutes before slicing. This allows the crumb to set properly and prevents crumbs when serving. The cake should be moist but not gummy, with a tender yet slightly dense texture. For best results, store leftovers covered at room temperature for up to 3 days or refrigerate for up to 5 days. Bring to room temperature before serving for optimal texture.

This one-bowl method proves that simplicity doesn't mean sacrificing quality. The secret lies in precise ingredient ratios and careful mixing—no shortcuts, just reliable results every time.

Pro cooking tips for this recipe

Temperature Precision

Your oven’s accuracy is the single most critical factor for this cake. Preheat to 350°F for exactly 15 minutes before baking—this ensures even heat distribution. I use an Oster digital thermometer to confirm my oven hits the target temp. If your oven runs hot, reduce to 340°F and check at 25 minutes—the cake is done when a toothpick comes out clean with a few moist crumbs. 🌡️

Butter Consistency

The butter must be room temperature—not melted, not cold. Press your finger into it: it should dent slightly but hold its shape. I pull butter from the fridge 1 hour before baking and microwave it for 10-second bursts until pliable. Cold butter creates dense cakes, while melted butter causes sinking. For extra insurance, I let the butter sit in a warm bowl of water for 5 minutes before mixing.

Mixing Technique

Stop mixing the moment the batter comes together with just a few flour streaks visible. Overmixing develops gluten, leading to a tough cake. Use a spatula to gently fold dry ingredients into wet—this prevents lumps. I mix on low speed for 20 seconds after combining, then scrape the bowl thoroughly. The batter should be thick but pourable, like heavy pudding. 🥄

Pan Preparation

Grease your 9-inch round pan with butter or baking spray, then line the bottom with parchment paper for easy removal. I draw a ½-inch circle on the paper to guide even batter distribution. For extra insurance, dust the pan lightly with flour after greasing. This prevents sticking and ensures clean slices. Avoid nonstick sprays—they can leave a residue that affects flavor.

Baking Time

Bake for 30-35 minutes, but start checking at 25 minutes. The edges should pull away from the pan slightly, and the center should spring back when pressed gently. If the top browns too quickly, tent the pan with aluminum foil. The cake is done when internal temperature reaches 205-210°F. Overbaking dries out the crumb—remove it promptly when done. 🕒

Cooling Strategy

Let the cake cool in the pan for 10 minutes before transferring to a wire rack. This prevents cracking. For layered cakes, cool each layer completely before frosting. If you’re in a hurry, I recommend cooling the cake upside down on the rack for 5 minutes to speed up the process. Never stack hot pans—they trap moisture and create soggy bottoms. Patience here ensures clean slices and professional results.

Frequently asked questions