Name: Easy Chocolate Sheet Cake with Fudge Frosting Recipe
Prep time: 15 min
Cook time: 18 min
Total time: 50 min
Cuisine: American
Ingredients: 2 Tablespoons unsalted butter, at room temperature; 2 cups sugar (400 grams); 2 1/4 cups flour (measured correctly by scooping and leveling) (280 grams); 2/3 cup cocoa powder (50 grams); 2 teaspoons baking soda (8 grams); 1/2 teaspoon kosher salt (2 grams); ½ cup (1 stick) unsalted butter, melted; 1 cup milk (230 grams); 2 eggs; 2 Tablespoons apple cider vinegar (30 grams); 2 teaspoons vanilla extract (8 grams); 1 cup hot water (230 grams); 3 and 1/2 cups powdered sugar; 3/4 cup cocoa powder; 1/2 cup melted butter; Pinch of salt; 1/3 cup hot water (between 175-200 degrees F; you may not need it all); ¼ cup of your favorite sprinkles (optional)

Jump to Recipe· 3.9 from 74 reviews

If you want a dessert that impresses without hours in the kitchen, the Easy Chocolate Sheet Cake with Fudge Frosting Recipe is your answer. This cake is wonderfully moist, chocolaty, and topped with an irresistible fudge frosting that almost melts in your mouth. It’s a perfect crowd-pleaser for parties, family gatherings, or whenever you crave something sweet and comforting. Best of all, this recipe comes together quickly and uses simple ingredients that you probably already have on hand, making it an absolute favorite to whip up on a whim.

Ingredients You'll Need

A white tray with nine clear glass bowls and small white and black dishes holding baking ingredients arranged neatly: a large bowl of white flour with a powdery texture on the right, a bowl of fine brown cocoa powder above it, a bowl of white granulated sugar top left, and a clear measuring cup with white milk top right. Below the cocoa is a small white bowl with melted yellow butter, next to it a white plate with two whole white eggs. On the bottom left, a small white round dish with light brown apple cider vinegar, beside it a small piece of pale yellow room temperature butter resting on wax paper. There is a small clear dish with coarse white salt and a small black dish with white baking soda near it. A small clear bowl with dark brown vanilla liquid sits center bottom, next to a clear glass cup with red hot water. All items sit on a white marbled surface photo taken with an iphone --ar 4:5 --v 7

The beauty of this recipe lies in its straightforward ingredients, each bringing something special to the table. From the rich cocoa powder that gives the cake its deep chocolate flavor to the apple cider vinegar which helps create such a tender crumb, every item plays a crucial role in crafting this standout dessert.

Unsalted butter: Both room temperature and melted butter are used to deliver richness and moistness throughout the cake and frosting.

Sugar: Provides sweetness and tenderness, ensuring the cake strikes the perfect balance.
Flour: Proper measuring ensures the cake rises nicely without being dense or heavy.
Cocoa powder: The hero ingredient that infuses deep, chocolatey goodness in both cake and frosting.

Baking soda: Helps the cake rise beautifully, giving it that light texture.
Kosher salt: Enhances all the flavors, making the chocolate pop.
Milk: Adds moisture and tenderness, working perfectly with the vinegar to activate the baking soda.

Eggs: Bind everything together and contribute to the cake’s structure.
Apple cider vinegar: A secret weapon that reacts with baking soda to create a tender crumb.
Vanilla extract: Adds warmth and depth to the overall flavor.

Hot water: Helps develop the cake’s thin, pourable batter and brings out the cocoa flavor fully.
Powdered sugar: Sweetens and thickens the fudge frosting while keeping it smooth.
Pinch of salt: Balances sweetness in the frosting.
Sprinkles (optional): For a fun, colorful finishing touch if desired.

How to Make Easy Chocolate Sheet Cake with Fudge Frosting Recipe

Step 1: Prepare the Sheet Cake Batter

Start by heating your oven to 375 degrees Fahrenheit and greasing a 13x18-inch sheet pan with softened butter. Press a parchment paper into the bottom to prevent sticking and help remove the cake later. Then, whisk together your dry ingredients: sugar, flour, cocoa powder, baking soda, and salt. In a separate bowl, combine melted butter, milk, eggs, apple cider vinegar, and vanilla extract. Pour the wet ingredients into the dry and whisk until almost combined. Slowly add hot water, whisking gently until you achieve a smooth, thin batter ready for baking.

Step 2: Bake the Cake

Pour the luscious batter into your prepared pan and place it in the oven. Bake for 14 to 18 minutes, checking with a toothpick or cake tester near the end. When it comes out clean, your cake is perfectly done. Let it cool in the pan for 10 to 15 minutes to set up before jumping into the frosting step.

Step 3: Whip Up the Fudge Frosting

While your cake is still warm, mix melted butter with cocoa powder and powdered sugar in a large bowl. At first, it’ll look crumbly and dry—that’s exactly what you want! Add hot water slowly, stirring well after each addition. The frosting will come together into a thick but pourable pudding-like consistency perfect for spreading.

Step 4: Frost the Cake

Pour the warm fudge frosting over your cake, spreading it quickly with an offset spatula so it covers every inch before it begins to set. If you’re feeling festive, scatter sprinkles or chopped nuts on the edges while the frosting is still wet. Let everything cool completely before slicing into those rich, fudgy squares.

How to Serve Easy Chocolate Sheet Cake with Fudge Frosting Recipe

Two images side by side show a rectangular white baking pan with a dark red rim on a white marbled surface. The left image shows a smooth, light brown chocolate batter filling the pan evenly with a few small bubbles on the surface. The right image shows the same pan after baking, with a dark brown cake that has risen with a slightly rough texture and a few cracks near the edges. Photo taken with an iphone --ar 4:5 --v 7

Garnishes

Simple garnishes can elevate your cake’s presentation and flavor. Consider a sprinkle of sea salt flakes on top of the frosting to counterbalance the sweetness or a light dusting of cocoa powder for an elegant, rustic look. Fresh raspberries or shards of chocolate add a fresh and crunchy contrast that friends and family will absolutely love.

Side Dishes

Since this cake is already rich and satisfying, pairing it with lightly whipped cream or a scoop of vanilla ice cream offers a perfect temperature and texture contrast. For a grown-up twist, a small glass of coffee or a cup of peppermint tea complements the chocolate notes beautifully without overpowering the dessert.

Creative Ways to Present

Think beyond the standard square by cutting the cake into fun shapes with cookie cutters for themed parties or layering it with fresh fruit and additional frosting to create an elevated dessert trifle. You could also serve individual portions in small ramekins topped with a drizzle of caramel sauce and a sprinkle of toasted nuts for an irresistible, classy display.

Make Ahead and Storage

Storing Leftovers

This cake keeps wonderfully in an airtight container at room temperature for up to three days, or in the fridge if you prefer it chilled. The fudge frosting stays moist and soft, so each bite remains deliciously decadent even after a couple of days.

Freezing

You can freeze the cake either frosted or plain. Wrap it tightly in plastic wrap followed by foil and freeze for up to three months. To thaw, transfer to the fridge overnight and bring to room temperature before serving, so the texture stays just right without drying out.

Reheating

If you enjoy your cake warm, you can microwave individual slices for 15 to 20 seconds to revive that freshly baked feeling. This step especially brings the fudge frosting to a gooey, irresistible consistency that’s hard to beat.

FAQs

Can I use regular vinegar instead of apple cider vinegar?

Yes, you can! While apple cider vinegar adds a subtle tang that complements the chocolate nicely, white vinegar works just fine in this recipe to activate the baking soda and create a tender crumb.

Is this cake gluten-free?

This particular recipe uses all-purpose flour, so it’s not gluten-free as is. However, you could experiment with a gluten-free flour blend, but keep in mind texture and moisture may vary.

Can I make this recipe dairy-free?

Absolutely! Swap the butter with a plant-based margarine and use your favorite non-dairy milk such as almond or oat milk. The cake will still come out moist and tasty with a fudge frosting adapted to dairy-free butter.

Why is hot water added to the batter?

The hot water helps to bloom the cocoa powder, unlocking deeper chocolate flavors and making the batter thinner, which contributes to the cake’s moist, tender texture.

How thick should the fudge frosting be?

The frosting should be thick enough to coat the back of a spoon yet pourable so it spreads easily over the warm cake. Adding hot water gradually helps you reach that perfect consistency without making it too runny.

Final Thoughts

There’s something truly magical about this Easy Chocolate Sheet Cake with Fudge Frosting Recipe that makes it an instant favorite whether you’re a beginner baker or a seasoned pro. It’s simple, satisfying, and downright delicious with every bite. I wholeheartedly encourage you to give it a try — you might just find your new go-to chocolate cake that everyone asks for time and time again.

Easy Chocolate Sheet Cake with Fudge Frosting Recipe

Ingredients You'll Need