Easy Chocolate Birthday Cake

Easy Chocolate Birthday Cake

chocolate sheet cake

Recipe by
Reviewed by Arturs Arnicans
Prep Time: 15m
Cook Time: 25m
Total Time: 40m
Temp.: 350 °F
Servings: 24
Difficulty: Easy
4.9 (14 Reviews)
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Ingredients

Adjust servings:

For cake:

For chocolate ganache:

Nutritional Information

224
calories
12,8g
fat
26,3g
carbohydrates
3,1g
protein
44mg
cholesterol
170mg
sodium
Easy Chocolate Birthday Cake

Recipe Description

This Chocolate Birthday Cake is the perfect dessert to whip up for a crowd when you don’t have all day to bake and assemble. It features ultra moist and rich cake and a decadent chocolate ganache topping. This soft and fluffy chocolate cake yields 24 servings and is great for a big birthday crowd.    

Deliciously moist and rich, this chocolate sheet cake is so easy and so good. Once you have the cake baked, you simply cover the cake with a silky-smooth chocolate ganache. Give it some extra decoration by topping the chocolate frosting with colorful sprinkles, slice and serve. So yummy! 

To make the Chocolate Birthday Cake, you will need the following ingredients:

Ingredients for Easy Chocolate Birthday Cake

Steps to make

  1. 1

    Heat oven and prepare baking pan

    5 min
    Step 1 - Easy Chocolate Birthday Cake

    Preheat the oven to 350 °F and grease an 8х12-inch baking pan.

  2. 2

    Combine butter and milk

    5 min
    Step 2 - Easy Chocolate Birthday Cake

    Melt 1 ¾ sticks butter, add ½ cup milk and mix to combine. Set aside to cool slightly.

  3. 3

    Mix all dry ingredients

    2 min
    Step 3 - Easy Chocolate Birthday Cake

    In a large bowl, mix together 1 ¾ cups flour, 1 ½ teaspoons baking soda, ⅔ cup cocoa powder, 1 ½ cups sugar, and ¼ teaspoon salt.

  4. 4

    Stir in the wet ingredients

    2 min
    Step 4 - Easy Chocolate Birthday Cake

    Add the butter mixture, 2 large eggs, and ⅔ cup sour cream to the dry ingredients and stir until just combined.

  5. 5

    Add hot water or coffee

    1 min
    Step 5 - Easy Chocolate Birthday Cake

    Whisk in ½ cup hot water or coffee and mix until smooth.

  6. 6

    Bake

    25 min
    Step 6 - Easy Chocolate Birthday Cake

    Pour the mixture into the prepared baking pan. Bake the cake for 20-25 minutes or until a skewer inserted into the center comes out clean. Don’t overbake.

  7. 7

    Cool

    Step 7 - Easy Chocolate Birthday Cake

    Once baked, let the cake cool completely on a wire rack.

  8. 8

    Make frosting

    5 min
    Step 8 - Easy Chocolate Birthday Cake

    In a medium heat-proof bowl set over a saucepan of simmering water, place 7 ounces finely chopped chocolate and ¾ cup heavy cream. Stir occasionally until melted.

  9. 9

    Frost

    Step 9 - Easy Chocolate Birthday Cake

    Cover the cooled cake evenly with the prepared chocolate frosting. Add sprinkles if desired. Refrigerate for 1 hour until set. Keep in the fridge before serving. The cake will keep well in the refrigerator in an airtight container for up to 5 days.

  10. 10

    Serve

    Step 10 - Easy Chocolate Birthday Cake

    Slice and serve at room temperature.

Our easy recipe for this Chocolate Birthday Cake is mixed in minutes and makes a perfect dessert for a big birthday crowd. This delicious chocolate cake is ultra moist, rich, and topped with decadent chocolate ganache. Give this recipe a go soon, and make sure you tag #cookmerecipes in your baking posts!

About the author

Lilly Mathuse

Lilly is an enthusiastic and cheerful young mom. She knows as well as any parent that children can be really picky when it comes to food. And she’s had plenty of experience trying to cook meals that are both tasty and nutritious, and able to satisfy the tastes of a fussy kid right away! To save you some precious time, Lilly's going to share with you all the tricks she learned the hard way, so you don’t have to! She has a wealth of recipes for quick and easy meals for kids and families on a budget.

Recipe Reviews

Have you made this recipe? Share your experience and help other cooks!

★★★★★
★★★★★
4.9 out of 5 (14 reviews)
Victor
May 11, 2025
Verified

Hice esta torta de cumpleanos para mi mejor amigo, y fue un exito total. Super facil y deliciosa! Todos estaban hablando de lo rica que era, definitivamente volveré a hacerla.

Yannick
March 11, 2025
Verified

Delicious!

Zoe
January 25, 2025
Verified

Exceptional

Samantha Johnson
August 10, 2024
Verified

This cake was a hit at my sister's party, so easy and super delicious!

Aly
April 22, 2024
Verified

This cake was a hit! My kids loved it at the party, super easy to make and totally delish.

Patricia
February 20, 2024
Verified

Superb and delightful!

Vanessa Smith
December 26, 2023
Verified

I made this Easy Chocolate Birthday Cake for my friend's surprise party, and it was a hit. Everyone loved its moist texture and rich flavor. The ganache was simple to make, and the colorful sprinkles added a fun touch. It made the celebration extra special without taking too much time. Highly recommend it for any gathering.

Greg Thompson
November 11, 2023
Verified

Super easy yum!

Valérie Dupont
August 20, 2023
Verified

J'ai fait ce gâteau pour l'anniversaire de mon mari! Simple à faire et tellement moelleux. Chaque bouchée était un succès. Merci pour cette recette délicieuse!

Ethan Thompson
January 2, 2023
Verified

Yo, this cake rocks! Made it for my kid's bday party and it was a hit. So easy to whip up, and that ganache? Pure heaven! My fam devoured it in minutes, def a new go-to for special occasions.

Emily
October 15, 2022
Verified

I made this Easy Chocolate Birthday Cake for my husband's surprise party. Everyone loved it and couldn’t believe how simple it was. The moistness of the cake and the rich ganache made it a hit. I’ll definitely bake it again.

Aaron Smith
March 12, 2022
Verified

Superb chocolate cake. Made it for my son's birthday, and everyone loved it. So easy to bake and decorate, and the ganache was to die for. Will definetly make again for family gatherings.

Emily
February 1, 2022
Verified

Delicious!

Athina
January 26, 2022
Verified

Yummy-yummy! So easy! Thanks!

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