Brown Butter Carrot Cake

This brown butter carrot cake has a soft, moist crumb, toasted walnuts, and a thick layer of tangy cream cheese frosting. Browning the butter adds a rich, nutty flavor that pairs perfectly with the brown sugar and cinnamon. It’s also easier to make than a layered carrot cake: just bake, cool, and spread the frosting over the top.

Why I Love This Viral Carrot Cake

Joe, who co-owns the blog with me, always gets the most incredible carrot cake for his son’s birthday. Every year I keep going back for another slice until I’ve practically given myself a stomachache. It’s that good, and I’ve wanted a homemade carrot cake that tastes like it ever since.

So when I saw @emijujuu’s viral brown butter carrot cake, I immediately recognized what I loved about that birthday cake: one thick layer of moist carrot cake with plenty of cream cheese frosting. I had to try making it, and I was honestly surprised by how close it tasted to the bakery version.

The brown butter adds a toasted, nutty flavor that I also love in my Brown Butter Chocolate Chip Banana Bread. Here, it brings out the richness of the brown sugar and pairs especially well with the cinnamon and toasted walnuts. The finely shredded carrots, applesauce, and buttermilk keep the cake soft, and the thick cream cheese frosting adds enough tang to balance each bite.

My favorite part about this is that there’s no stacking layers or decorating the sides. The batter comes together with a whisk and spatula, and once the cake cools, you just spread the frosting on top. It’s the carrot cake I’ll make for birthdays, fall get-togethers, or whenever I’m bringing dessert and want something worth going back for.

Ingredients You'll Need

For the cake:

• ¾ cup unsalted butter
• 1 cup brown sugar, lightly packed
• 2 eggs
• 1 ¼ cup all-purpose flour
• ¼ cup unsweetened applesauce
• ¼ cup buttermilk
• ½ teaspoon vanilla extract
• 1 teaspoon baking soda
• ¼ teaspoon salt
• ½ teaspoon cinnamon
• 1 and ½ cups finely shredded carrots
• ⅓ cup walnuts, toasted and roughly chopped

For the frosting:

• 8 oz cream cheese, softened
• 4 tablespoons butter, softened
• 1 teaspoon vanilla extract
• 1 and ½ cups powdered sugar

Ingredient Notes That Make This Viral Carrot Cake Better

• Unsalted butter: Measure the ¾ cup before browning, not afterward. Use the browned butter, including the golden-brown bits at the bottom of the pan, without adding extra butter to replace what evaporates. The frosting uses a separate 4 tablespoons of softened butter, not brown butter.
• Carrots: Finely grate fresh carrots using the small holes on a box grater, then measure out the amount you need. Skip bagged matchstick carrots here. You want fine shreds that blend into the cake rather than large, noticeable pieces.
• Unsweetened applesauce: Use plain, unsweetened applesauce so you don’t add extra sugar or spices beyond what’s listed. There’s already brown sugar in the batter and plenty of sweetness in the frosting.
• Buttermilk: Keep the buttermilk in this recipe rather than automatically replacing it with regular milk. Its acidity works with the baking soda, so it contributes more than just moisture.
• Walnuts: Toast the walnuts, let them cool, then roughly chop them before folding them into the batter. Aim for small pieces that give each slice some crunch without making the cake difficult to cut.
• Cream cheese: For a thick cream cheese frosting, use full-fat block cream cheese rather than a spreadable tub. Let both the cream cheese and frosting butter soften before mixing, but don’t melt them. They should be soft enough to beat smooth without becoming runny.

How to Make Brown Butter Carrot Cake

Step 1: Brown the Butter

Preheat the oven to 350°F. Grease a 9×9-inch baking pan and line it with parchment paper, leaving some overhang for lifting out the cake.

Melt the ¾ cup unsalted butter in a saucepan over medium heat. Continue cooking, stirring frequently, until golden-brown bits appear on the bottom and the butter smells nutty. Remove from the heat and pour into a heatproof bowl, scraping in those browned bits. Let cool for 10–15 minutes.

Step 2: Mix the Carrot Cake Batter

In a large bowl, whisk together the cooled brown butter, brown sugar, applesauce, buttermilk, eggs, and vanilla until smooth.

Sift the flour, baking soda, salt, and cinnamon over the wet ingredients. Fold gently with a spatula until mostly combined, leaving a few streaks of flour. Add the finely shredded carrots and toasted, chopped walnuts, then fold just until everything is evenly distributed and no dry flour remains.

Step 3: Bake and Cool

Pour the batter into the prepared pan and spread it evenly into the corners. Bake for 28–35 minutes, or until a toothpick inserted into the center comes out clean. Let the cake cool completely before removing it from the pan and adding the frosting.

Step 4: Make the Cream Cheese Frosting

In a medium bowl, beat the softened cream cheese with a hand mixer until smooth. Add the softened butter and vanilla, then beat until fully combined with no lumps. With the mixer on low, gradually add the powdered sugar. Continue mixing until the frosting is smooth and creamy, scraping down the bowl as needed.

Step 5: Frost and Serve

Lift the cooled cake out of the pan using the parchment. Carefully peel the paper away from the bottom and transfer the cake to a serving plate. Spoon the cream cheese frosting onto the cake and spread it across the top in a thick, even layer. Slice into squares and serve.

My Expert Tips for the Best Brown Butter Carrot Cake

• Use a light-colored saucepan for browning the butter. A stainless-steel or light-interior pan makes it easier to see the milk solids changing color. A dark pan can hide those browned flecks until they’re already burning.
• Measure the flour without packing it down. Spoon it into your measuring cup and level it off rather than scooping directly from the bag. This keeps the amount consistent instead of accidentally working extra flour into the cake.
• Take the chill off the eggs before mixing. Cold eggs can cause melted butter to firm up into little flecks. Using room-temperature eggs helps the brown butter blend into the batter smoothly.
• Watch your pan’s color, not just its size. A dark metal baking pan can brown the edges faster than a light-colored one. Start checking earlier if you’re using a dark pan rather than assuming the cake needs the full baking time.
• Chill soft frosting before adding more sugar. If the cream cheese frosting becomes too loose in a warm kitchen, refrigerate it for about 20–30 minutes, then stir and check the consistency. Chilling can help it hold its shape without making it sweeter or changing the ingredient ratios.

How to Store and Make Ahead Brown Butter Carrot Cake

• In the refrigerator: Store the frosted cake in an airtight cake container, or cover individual slices, and refrigerate for 3–4 days. The cream cheese frosting needs refrigeration, so don’t store this cake on the counter overnight.
• Before serving: Take out the slices you plan to serve about 20–30 minutes beforehand so the cake and frosting can soften. Keep the remaining cake refrigerated, and limit the frosted cake’s total time at room temperature to 2 hours, or 1 hour above 90°F.
• In the freezer: Freeze the whole cake or individual slices for up to 3 months for best quality. For frosted pieces, freeze briefly until the frosting is firm, then wrap tightly in plastic wrap and place in a freezer-safe container. Thaw overnight in the refrigerator before unwrapping and serving.
• Make-ahead tip: For a birthday or family get-together, bake and frost the cake one day ahead. Let the cake cool completely before frosting, then cover and refrigerate overnight. That leaves just slicing and serving for the day of your gathering, rather than waiting for a freshly baked cake to cool while guests are arriving. This carrot cake is also delicious chilled, so I love making it the day before I'm hosting.

Brown Butter Carrot Cake FAQs

What does brown butter add to carrot cake?

Brown butter adds a toasted, nutty flavor that complements the brown sugar, cinnamon, and walnuts in carrot cake. Heating the butter browns its milk solids, creating a deeper flavor than simply melting it. In this recipe, the brown butter goes into the cake, while the topping is a classic vanilla cream cheese frosting.

Can I make carrot cake without walnuts?

Yes. You can leave out the ⅓ cup of walnuts without replacing them with extra flour or another ingredient. They add crunch, but they aren’t essential to the cake. Chopped pecans are another option if you prefer their flavor and aren’t avoiding nuts.

What can I substitute for buttermilk in carrot cake?

A common baking substitute is milk mixed with a little lemon juice or white vinegar. For this recipe, add ¾ teaspoon lemon juice or white vinegar to a measuring cup, then pour in enough whole milk to reach ¼ cup total. Stir and let stand for 5–10 minutes. Cultured buttermilk is still the first choice for matching the original recipe’s texture.

Does this carrot cake need pineapple?

No. This brown butter carrot cake uses finely shredded carrots, unsweetened applesauce, and buttermilk, with no pineapple in the batter. Stick with the listed amounts rather than adding crushed pineapple on top of them. 

Can I make this carrot cake without a stand mixer?

Yes. The cake batter comes together with a whisk and spatula, so there’s no need for a stand mixer or a butter-and-sugar creaming step. A handheld electric mixer is useful for the cream cheese frosting, where it helps combine the softened cream cheese, butter, and powdered sugar smoothly.

Why did my carrot cake turn out dry?

Too much flour, overbaking, or an oven that runs hot can dry out carrot cake. Measure the flour carefully and begin checking the center at the earlier end of the 28–35-minute baking window. Use the toothpick test rather than automatically leaving the cake in for the full time.

Does carrot cake with cream cheese frosting need to be refrigerated?

Yes. This carrot cake needs refrigeration once it’s covered with cream cheese frosting. Store it tightly covered or in an airtight container in the refrigerator for 3–4 days. Let the slices you’re serving soften briefly at room temperature rather than leaving the whole cake out.

Viral Cake Recipes to Try Next

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• Oreo tres leches cake
• Matilda chocolate cake
• Chocolate crunch cake
• Dot cake