Name: Browned Butter Cream Cheese Frosted Carrot Cake with Sourdough Discard Recipe
Prep time: 25 min
Cook time: 1 h
Total time: 3 h 35 min
Cuisine: American
Ingredients: 240 g (2 cups) all-purpose flour; 1 tbsp ground cinnamon; 1/4 tsp ground nutmeg; 1/4 tsp ground cloves; 1 tsp Kosher salt; 2 tsp baking soda; 400 g (2 cups) white granulated sugar; 8 oz (1 cup) canola oil or vegetable oil; 250 g (1 cup) unsweetened applesauce; Zest of 1 orange; 2 tsp vanilla extract; 4 large eggs; 270 g (1 cup stirred down) 100% hydration sourdough discard; 1 lb carrots, shredded (use freshly shredded, not pre-shredded); 100 g (1 cup) roughly chopped walnuts (optional, may substitute pecans); 80 g (1/2 cup) seedless raisins (optional); Butter, for greasing pan; 4 oz (1 stick) unsalted butter; 8 oz (1 block) full-fat cream cheese, softened; 1 tbsp orange juice; 1 vanilla bean, seeded or 1 tsp vanilla bean paste; 1/4 tsp Kosher salt; 8 oz (about 1 3/4 cups) confectioners’ (powdered) sugar

Print Recipe· 3.9 from 7 reviews

If you adore the comforting flavors of classic carrot cake but want to take it to an entirely new level of deliciousness, you’re going to fall head over heels for this Browned Butter Cream Cheese Frosted Carrot Cake with Sourdough Discard Recipe. It combines the rich, nutty aroma of browned butter with the tangy smoothness of cream cheese frosting, all while making clever use of sourdough discard to create an incredibly moist and tender crumb that melts in your mouth. This cake is truly a celebration of texture, flavor, and sustainable baking that’s perfect for sharing with friends, family, or simply treating yourself to a slice (or two!).

Ingredients You’ll Need

The image shows four white bowls with different ingredients on a light wood textured surface with a white marbled texture background. The top left bowl is filled with bright orange shredded carrots with a rough texture. The top right bowl contains a smooth, beige liquid mixture with tiny specks visible, sitting on a slightly crumpled white cloth with small black star designs. The bottom left bowl holds a fine white powder with a swirl pattern on its surface, and the bottom right bowl has uneven, light brown walnut pieces with a textured and rough look. Photo taken with an iphone --ar 4:5 --v 7

The beauty of this carrot cake lies in its straightforward and wholesome ingredients. Each one is carefully selected to bring out vibrant flavors and a perfect balance of moisture and spice, while the sourdough discard adds a subtle depth and tenderness that’s surprisingly magical. Here’s what you’ll need:

All-purpose flour (240 g / 2 cups): The foundation that gives structure to the cake while keeping it tender.
Ground cinnamon (1 tbsp): Adds warm, aromatic spice that’s classic in carrot cake.
Ground nutmeg (1/4 tsp) and ground cloves (1/4 tsp): These spices deepen the flavor profile with subtle earthiness.
Kosher salt (1 tsp): Enhances all the flavors brilliantly.
Baking soda (2 tsp): Gives lift to the cake, ensuring a light texture.
White granulated sugar (400 g / 2 cups): Sweetens and balances the natural earthiness of the carrots and spices.
Canola or vegetable oil (8 oz / 1 cup): Keeps the cake moist without overwhelming flavors.
Unsweetened applesauce (250 g / 1 cup): Adds natural sweetness and moisture while being a healthy swap for some oil.
Orange zest (zest of 1 orange): Lifts the cake with a burst of citrus brightness.
Vanilla extract (2 tsp): Brings warmth and rounds out the overall flavor.
Large eggs (4): Provide structure and richness.
Sourdough discard (270 g / 1 cup stirred down, 100% hydration): The secret ingredient for an unbelievably tender crumb and subtle tang.
Freshly shredded carrots (1 lb): The star ingredient—adds moisture, texture, and natural sweetness.
Chopped walnuts (100 g / 1 cup), optional: Adds crunch and a nutty complement to the carrots.
Seedless raisins (80 g / 1/2 cup), optional: Bring chewy bursts of sweetness throughout the cake.
Unsalted butter (for greasing pans): Prevents sticking and adds buttery undertones.
Unsalted butter (4 oz / 1 stick) for frosting: Browned to enrich the flavor of the cream cheese frosting.
Full-fat cream cheese (8 oz / 1 block), softened: The luscious base for the frosting’s tangy creaminess.
Orange juice (1 tbsp): Adds a fresh citrus note to the frosting balancing the richness.
Vanilla bean or vanilla bean paste (1 bean or 1 tsp paste): Gives the frosting a natural vanilla aroma and tiny specks of beauty.
Kosher salt (1/4 tsp): Balances sweetness and enhances flavor.
Confectioner’s (powdered) sugar (8 oz / about 1 3/4 cups): Sweetens the frosting light and fluffy.

How to Make Browned Butter Cream Cheese Frosted Carrot Cake with Sourdough Discard Recipe

Step 1: Prepare Your Cake Pans and Oven

Preheat your oven to 350°F (177°C). Line a 13 x 9-inch cake pan with parchment paper, and generously grease the parchment and any exposed pan sides with butter. You can choose to bake the batter in multiple 9-inch cake pans instead, which reduces baking time and creates layers perfect for stacking. Setting up your bakeware properly ensures your cake releases beautifully once baked.

Step 2: Combine the Dry Ingredients

In a large bowl, whisk together the flour, cinnamon, nutmeg, cloves, salt, and baking soda. This blend of spices creates the warming scent and flavor that makes carrot cake irresistible. Mixing these dry ingredients well now ensures even distribution throughout your batter later on.

Step 3: Blend the Wet Ingredients

In another bowl, whisk the sugar with the oil, unsweetened applesauce, orange zest, and vanilla extract until smooth and combined. Then add the eggs one at a time, whisking or mixing after each addition for a silky, homogenous mixture. This step builds the cake’s moist, tender base and infuses citrus brightness that complements the spices.

Step 4: Fold in the Sourdough Discard

Gently fold the sourdough discard into the wet ingredients using a silicone spatula. Avoid overmixing—this step is key for a tender crumb. The sourdough discard adds subtle tang and helps keep the texture soft and moist, all while reducing waste in the kitchen. It’s a win-win!

Step 5: Combine Dry and Wet Ingredients

Add the dry ingredient mixture to the wet batter, folding gently with the spatula. Stop folding when distinct flour streaks remain. Then add the shredded carrots, walnuts, and raisins (if using), and fold once more until the batter is just combined with no visible flour. Adding the heavier ingredients before fully combining the dry flour makes sure they stay suspended and don’t sink to the bottom during baking.

Step 6: Bake the Cake

Pour the batter into your prepared pan or divide it evenly among your smaller pans. Bake in the preheated oven for about 60 minutes if using the 13 x 9-inch pan, or 35-40 minutes for two 9-inch pans, or 20-25 minutes for three 9-inch pans. The cake is done when it is golden on top, edges pull slightly away from the pan, and it springs back under a gentle press. You can also confirm doneness with a thermometer aiming for 200-210°F internally.

Step 7: Cool Completely

Allow your cake to cool entirely—at least 2 to 3 hours—before frosting. This prevents the frosting from melting and ensures you get clean, beautiful layers or slices. Cooling is worth the patience here!

Step 8: Brown the Butter for the Frosting

In a skillet over medium heat, melt the butter and stir occasionally. Watch the color change from yellow to a rich golden brown with a nutty aroma. Remove from heat immediately and transfer to a heatproof bowl to cool to room temperature. Browning the butter adds a deep, toasty flavor that elevates the classic cream cheese frosting into something extraordinary.

Step 9: Make the Browned Butter Cream Cheese Frosting

Once the butter has cooled, beat it together with softened cream cheese until smooth and creamy. Add orange juice, vanilla bean seeds or paste, and salt, mixing until combined. Gradually sift in powdered sugar and mix until light and fluffy. This frosting balances tangy, sweet, and nutty notes perfectly, complementing the spiced carrot cake beneath beautifully.

Step 10: Frost Your Cake

Use an offset spatula to spread the frosting evenly over your cooled cake. If you baked layers, stack and frost the layers generously. The thick, luscious frosting makes each bite an indulgent, irresistible delight. Now your Browned Butter Cream Cheese Frosted Carrot Cake with Sourdough Discard Recipe is ready to impress!

How to Serve Browned Butter Cream Cheese Frosted Carrot Cake with Sourdough Discard Recipe

A single-layer rectangular brown cake with a textured, slightly uneven surface in a silver metal baking pan lined with parchment paper, resting on a white cloth with small black crosses on a wooden table replaced by white marbled texture photo taken with an iphone --ar 4:5 --v 7

Garnishes

Top your frosted cake with a sprinkle of chopped toasted walnuts or pecans to add a bit of crunch and earthiness that echoes the nutty browned butter flavor. You can also grate a little orange zest over the top for a fresh and vibrant finish that ties into the citrus notes inside the cake.

Side Dishes

This carrot cake pairs wonderfully with a simple cup of freshly brewed coffee or a warm spiced chai tea to enhance those comforting spices. For an extra special touch, serve it with a dollop of lightly whipped cream or a scoop of vanilla bean ice cream—both are perfect complements to the cake’s moist, rich texture.

Creative Ways to Present

Try slicing and serving the carrot cake as individual mini parfaits by layering crumbled cake with frosting and chopped nuts in small glass jars. It’s a festive, modern take that’s perfect for gatherings. Alternatively, use cookie cutters to create fun shapes from the cake layers for a playful presentation that kids and adults will adore.

Make Ahead and Storage

Storing Leftovers

Keep your leftover cake tightly covered with plastic wrap or stored in an airtight container in the refrigerator. The cream cheese frosting calls for refrigeration to stay fresh, and your cake will remain moist and flavorful for up to 4 days when stored properly.

Freezing

You can freeze unfrosted cake layers wrapped tightly in plastic wrap and then foil for up to 3 months. Thaw overnight in the fridge before frosting. For frosted cake, freeze it uncovered for a few hours until the frosting hardens, then wrap gently and freeze. When ready to eat, thaw overnight in the fridge and bring to room temperature before serving.

Reheating

This carrot cake is delightful straight from the fridge but warming a slice slightly in the microwave for 10-15 seconds can release those incredible browned butter aromas and soften any chilled frosting for an even more decadent experience.

FAQs

What is sourdough discard, and why use it in this carrot cake?

Sourdough discard is the portion of starter you remove during regular feeding to keep your starter manageable. It’s packed with flavor and natural acidity, which helps tenderize the crumb and adds a subtle tang to the carrot cake, making it moist and rich without overpowering other flavors.

Can I substitute the oil with melted butter in the cake?

You can, but oil tends to keep the carrot cake moister than butter. Butter will add a richer flavor but might make the cake slightly denser. If you use butter, consider lowering the oven temperature slightly to avoid over-browning.

How do I know when the browned butter is ready for the frosting?

Watch the butter closely as it melts and foams; it will change from yellow to a golden brown color with a nutty aroma. Once you see brown specks and smell the nutty scent, remove from heat immediately to avoid burning. Let it cool before mixing into the frosting.

Can this recipe be made as cupcakes?

Absolutely! Line a cupcake tray with liners and fill each about two-thirds full. Bake for 22-25 minutes or until a toothpick inserted comes out with just a few moist crumbs. Perfect for portable treats or parties.

Is it necessary to use fresh shredded carrots instead of pre-shredded?

Freshly shredded carrots hold more moisture and have a better texture, which makes a big difference in your cake’s tenderness and overall bite. Pre-shredded carrots sometimes dry out or have preservatives that can affect the cake’s texture.

Final Thoughts

This Browned Butter Cream Cheese Frosted Carrot Cake with Sourdough Discard Recipe is more than just a dessert; it’s a cozy, heartwarming experience that brings together simple ingredients with a thoughtful twist to create something truly special. Whether you’re baking for a celebration or craving a sweet slice of happiness on a quiet afternoon, this cake will not disappoint. Trust me, once you make it, it will quickly become one of your favorites to bake and share over and over again!