Introduction
This rich and fudgy Chocolate Sheet Cake is the perfect easy dessert for birthdays, family gatherings, potlucks, holidays, or whenever you’re craving a classic homemade chocolate cake.
The soft, moist chocolate cake is covered with warm, glossy fudge frosting that sets into a deliciously smooth layer. Serve each square with fresh strawberries for a beautiful and crowd-pleasing dessert.
Recipe Overview
| Prep Time | Cook Time | Total Time | Yield | Difficulty |
| 15 minutes | 35 minutes | 50 minutes | 24 squares | Easy |
Why You’ll Love This Recipe
Rich, deep chocolate flavor.
Soft and moist texture.
Easy one-pan dessert.
Simple ingredients.
Glossy homemade fudge frosting.
Perfect for parties and gatherings.
Easy to cut into neat squares.
Ingredients
Chocolate Sheet Cake
| Ingredient | Amount |
| All-purpose flour | 2 cups |
| Granulated sugar | 2 cups |
| Unsweetened cocoa powder | ¾ cup |
| Baking soda | 2 teaspoons |
| Salt | 1 teaspoon |
| Vegetable oil | 1 cup |
| Hot water | 1 cup |
| Whole milk | 1 cup |
| Large eggs | 2 |
| Alcohol-free vanilla flavoring | 1 teaspoon |
Fudge Frosting
| Ingredient | Amount |
| Unsalted butter | ½ cup |
| Unsweetened cocoa powder | ¼ cup |
| Milk | ⅓ cup |
| Powdered sugar | 3 cups |
For Serving
Fresh strawberries, raspberries, or other fresh berries are optional but make a beautiful addition.
Step-by-Step Instructions
Prepare the Oven
Preheat your oven to 175°C (350°F).
Grease a 9 × 13-inch baking pan thoroughly. You can also line the bottom with parchment paper for easier removal.
Mix the Dry Ingredients
In a large mixing bowl, sift together the flour, granulated sugar, cocoa powder, baking soda, and salt.
Whisk until everything is evenly distributed.
Add the Wet Ingredients
Add the vegetable oil, hot water, whole milk, eggs, and alcohol-free vanilla flavoring.
Beat on medium speed for about 2 minutes, or whisk vigorously by hand until the batter is smooth and well combined.
The batter will be fairly thin, which is normal for this cake.
Bake the Cake
Pour the chocolate batter into the prepared baking pan.
Spread it evenly and place the pan in the preheated oven.
Bake for 30–35 minutes, or until a toothpick inserted into the center comes out clean or with a few moist crumbs attached.
Avoid overbaking, as this can make the cake dry.
Make the Fudge Frosting
While the cake is cooling slightly, place the butter in a saucepan over medium heat.
Allow it to melt completely.
Add the cocoa powder and milk, whisking continuously.
Bring the mixture to a gentle simmer, then remove the saucepan from the heat.
Finish the Frosting
Gradually add the powdered sugar while whisking until the frosting becomes smooth, thick, and glossy.
If the frosting seems too thick, add a small splash of milk.
If it seems too thin, gradually add a little more powdered sugar.
Frost the Cake
Pour the warm fudge frosting directly over the warm cake.
Use a spatula to spread it evenly across the entire surface.
Allow the frosting to cool and set before slicing.
Slice and Serve
For clean, sharp squares, use a sharp knife.
Wipe the knife with a warm, slightly damp towel between cuts to keep the edges neat.
Serve the chocolate cake squares with fresh strawberries or your favorite berries.
Best Tips
Use good-quality cocoa powder: Since chocolate is the main flavor, a good unsweetened cocoa powder can make a noticeable difference.
Don’t overbake: Start checking the cake around the 30-minute mark.
Frost while warm: Pouring the frosting over a warm cake helps it spread beautifully and creates that classic glossy finish.
Whisk the frosting well: Make sure the powdered sugar is fully incorporated for a smooth, lump-free topping.
For cleaner slices: Let the frosting set completely before cutting.
Best Ingredient Options
Flour: Regular all-purpose flour works best for this recipe.
Milk: Whole milk provides a richer texture, but 2% milk can also be used.
Oil: Vegetable oil gives the cake a soft texture. Canola oil is another good neutral option.
Vanilla: Alcohol-free vanilla flavoring works well, but regular vanilla extract can also be used if preferred.
Cocoa powder: Use unsweetened cocoa powder rather than sweetened hot chocolate mix.
Recipe Variations
Chocolate Strawberry Cake
Add sliced fresh strawberries over individual portions before serving.
Chocolate Peanut Butter Cake
Drizzle smooth peanut butter over the frosting after it has partially set.
Chocolate Coconut Cake
Sprinkle shredded coconut over the warm frosting before it completely sets.
Chocolate Nut Cake
Add chopped pecans or walnuts over the frosting for extra crunch.
Extra Fudgy Version
For an even richer dessert, serve each square with a scoop of vanilla ice cream and warm chocolate sauce.
What to Serve With
This cake pairs beautifully with:
- Fresh strawberries.
- Raspberries or blueberries.
- Vanilla ice cream.
- Whipped cream.
- Fresh coffee.
- Hot chocolate.
- Cold milk.
Make-Ahead Instructions
The cake can be baked a day ahead.
Allow it to cool completely, cover it tightly, and keep it at room temperature.
Prepare the frosting when you’re ready to finish the cake, or frost it in advance and allow the topping to set completely.
Storage
Store leftover cake in an airtight container at room temperature for up to 2 days.
For longer storage, refrigerate it for up to 5 days.
Allow refrigerated cake to sit at room temperature for a short time before serving for the best texture.
Freezing
Cut the cake into individual squares and place them in an airtight freezer-safe container.
Separate layers with parchment paper to prevent sticking.
Freeze for up to 3 months.
Thaw overnight in the refrigerator or allow individual portions to thaw at room temperature.
Common Mistakes to Avoid
Overmixing the batter: Mix just until the ingredients are combined and the batter is smooth.
Overbaking: Too much time in the oven can result in a dry cake.
Using hot frosting incorrectly: The frosting should be warm and pourable, not boiling hot.
Slicing too soon: Give the frosting enough time to set for cleaner squares.
Adding too much powdered sugar: Add it gradually so you can control the frosting consistency.
Nutrition Estimate
Approximate values per serving and will vary depending on ingredients and portion size.
| Nutrient | Estimated Amount |
| Calories | 330 kcal |
| Carbohydrates | 48 g |
| Protein | 4 g |
| Fat | 15 g |
| Saturated Fat | 5 g |
| Sugar | 34 g |
| Fiber | 2 g |
| Sodium | 220 mg |
Frequently Asked Questions
Can I make this cake without a mixer?
Yes. The batter can be prepared with a whisk and a large mixing bowl. Just make sure everything is thoroughly combined.
Can I use a different baking pan?
A similar-sized rectangular pan can work, but baking time may change depending on the dimensions and depth of the pan.
Why is my cake dry?
The most common reason is overbaking. Remove the cake once a toothpick comes out clean or with a few moist crumbs.
Can I make the frosting ahead of time?
Yes, but the frosting thickens as it cools. Warm it gently and stir well before spreading if necessary.
Can I add strawberries to the cake?
Absolutely. Fresh strawberries are especially delicious served alongside the chocolate cake. You can also add sliced strawberries to individual portions just before serving.
How do I get perfectly clean slices?
Let the frosting set completely, use a sharp knife, and wipe the blade clean between each cut.
Final Thoughts
This Chocolate Sheet Cake is an easy, rich, and comforting dessert that’s perfect when you need something simple enough for a weeknight but impressive enough for a celebration.
The moist chocolate cake and glossy fudge frosting create the classic combination everyone loves, while fresh strawberries add a bright and beautiful finishing touch. 🍫🍓