tender chocolate sheet cake slice with a coconut fudge frosting

This post may contain affiliate links. Read our full disclosure.

Sheet pan recipes are great ways to feed crowds! Check out or Sheet Pan Teriyaki Glazed Salmon Recipe or Sheet Pan Croissant Breakfast Sandwiches! We also love this Foccacia Bread Recipe baked in a sheet pan for serving many Panera Bread Frontega Chicken Paninis!

Chocolate Sheet Cake

A Sheet Pan Chocolate Cake smothered with a coconut fudge frosting is sure to become one of those desserts you can easily rely on! Who needs little Debbie Cakes or Petit fours, when you can whip up a chocolate cake in a sheet pan without the hassle of making a tall tier cake? You get the same moist and tender texture of a rich chocolate cake only portioned out to individual servings of choice (cut into smaller squares if you wish) and feed a crowd! How amazing?

This recipe was brought to one of our church fellowship meals and the lady that shared the recipe told me this was her wedding dessert! You know it’s a good recipe when it’s a wedding dessert! I could only imagine all the other special events it could make it to, like a birthday cake covered with confetti sprinkles or simply a plain Texas Sheet Cake! The fact is you can decorate it to any occasion and cut it to any size, it’s super versatile and best of all tasty enough to make it to special events!

chocolate sheet cake in a pan that is sliced into squares

How to Make a Chocolate Sheet Cake:

chocolate texas sheet cake with fudge frosting

Q&A

Fudge Icing Variations?

This chocolate cake can be made with so many different icing variations! Here are some ideas;

  • German Chocolate Sheet Cake- omit the buttermilk and use condensed milk instead.
  • Plain Texas Sheet Cake- omit the coconut flakes to make a plain fudge topping.
  • Confetti Sheet Cake- pour the icing over the cake then sprinkle with confetti cake decorations.
  • Mocha Sheet Cake- omit the buttermilk and use brewed coffee instead.
  • Birthday Sheet Cake- pour the icing over the cake then garnish with rainbow sprinkles.
  • Peanut Butter Fudge Icing- omit the buttermilk and use peanut butter instead.
  • Triple Fudge- pour the icing over the cake then garnish with mini chocolate chips.

What flour to use?

Cake Flour is the best choice of flour to use when it comes to baking a cake at home. However, if you don’t have any you can simply take out 2 tbsp of the measured all-purpose flour you have on hand and replace it with cornstarch. Cake flour creates a tender crumb and if you don’t have cornstarch or cake flour, all-purpose flour will work just as good.

Flours with a low gluten content are ideal for cake recipes since they create softer crumbs. Consider pastry flour, self-rising flour (omit part of the leavening called for since it has some in the flour already), and cake flour.

What Size Sheet Pan?

The sheet pan I used was an 18 x12″ sheet pan. This is the overall pan dimensions however bake surface would be 16.5″x11.5″ wide. It’s hard to find the exact pan dimensions as sellers go by the next rounded off digits like an 18×13″ sheet pan. Regardless, anything within those two size frames would be ideal as sellers go by one or the other dimension. Keep in mind the smaller the pan, the taller the cake.

Can I make Without Buttermilk?

Yes! Buttermilk or any acid is recommended with the use of baking soda to prevent any bitter after taste. If you don’t have buttermilk, no worries! Simply substitute milk and vinegar. Lemon juice is also very acidic so that can be used as well.

How to make a Dark Chocolate Sheet Cake?

Making a dark chocolate cake is just a matter of the type of cocoa powder you use or melted chocolate. Regular unsweetened cocoa powder tends to give more of a brown hue, whereas Dark Special Cocoa Powder is much more intense. I like to always mix and match the two for a deep chocolate cake hue without it being too extreme to one or the other.

Can I Use A Smaller Pan Size?

Yes! A smaller pan size could work although I wouldn’t exceed anything smaller than a 14″ pan.

Tips:

  • Use half dark and half unsweetened cocoa for the cake and icing to get a rich chocolate hue.
  • Sprinkle rainbow sprinkles for a Birthday Sheet Cake!
  • Add pecans, walnuts, or hazelnuts for the coconut!
  • Let fudge icing set in the fridge before slicing.

Other Sheet Pan Recipe To Make:

Join My Weekly Newsletter

New recipes, homesteading, family life, what we eat in a week, and hospitality tips.

Pin this now to find it later

Pin it

Chocolate Sheet Cake

No ratings yet
The perfect way to feed a crowd chocolate cake is to make a Chocolate Sheet Cake! This Chocolate Sheet Cake Recipe is super moist and the coconut fudge icing is extremely delicious! It was a potluck find that became a family favorite recipe! 
tender chocolate sheet cake slice with a coconut fudge frosting
Prep Time: 15 minutes
Cook Time: 25 minutes
Total Time: 40 minutes
Servings: 24 slices
Course: Dessert
Cuisine: American

Equipment

Ingredients 

Chocolate Cake:

  • 1 cup water
  • 1 cup butter
  • 4 Tbsp cocoa
  • 2 cups sugar
  • 2 cups flour
  • 1 tsp baking soda
  • 1/2 tsp salt
  • 1/2 cup buttermilk
  • 1 tsp vanilla
  • 2 eggs

Coconut Fudge Icing:

  • 1/2 cup butter
  • 4 Tbsp cocoa
  • 1/4 cup buttermilk
  • 1 tsp vanilla
  • 1 1/2 cups powdered sugar
  • 1 cup coconut flakes

Instructions

How To Make Chocolate Sheet Cake:

  • Bring the first three ingredients to a boil.
  • In a bowl combine the dry ingredients (sugar, flour, soda, and salt.) Mix in the hot cocoa mixture.
    instructions on how to make a chocolate sheet cake
  • Then add the buttermilk, vanilla, and eggs and beat well.
    adding the eggs, vanilla, and buttermilk to the chocolate batter
  • Pour batter into a greased sheet pan and bake at 325°F for 25-30 minutes.
    pouring the chocolate batter into a sheet pan

To Make Icing:

  • In a small saucepan bring all the fudge icing ingredients to a boil and pour over cooled cake. Let cake set in the fridge until icing stiffens. Cut into squares before serving.
    chocolate sheet cake with the poured coconut fudge icing on top in a sheet pan

Notes

  • Cocoa Powder- for a richer and darker chocolate cake sub 2 Tbsp of Dark Cocoa in place of the regular unsweetened cocoa.
  • Coconut- can be omitted to make a plain fudge icing. 
  • Make it a Birthday Cake: by pouring plain fudge icing over the cake then garnishing with rainbow sprinkles.  
 

Nutrition (per serving)

1slice Serving271kcal Calories34g Carbs2g Protein15g Fat10g Saturated Fat45mg Cholesterol218mg Sodium73mg Potassium1g Fiber25g Sugar387IU Vitamin A1mg Vitamin C19mg Calcium1mg Iron
Nutrition Facts
Chocolate Sheet Cake
Serving Size
 
1 slice
Amount per Serving
Calories
271
% Daily Value*
Fat
 
15
g
23
%
Saturated Fat
 
10
g
63
%
Cholesterol
 
45
mg
15
%
Sodium
 
218
mg
9
%
Potassium
 
73
mg
2
%
Carbohydrates
 
34
g
11
%
Fiber
 
1
g
4
%
Sugar
 
25
g
28
%
Protein
 
2
g
4
%
Vitamin A
 
387
IU
8
%
Vitamin C
 
1
mg
1
%
Calcium
 
19
mg
2
%
Iron
 
1
mg
6
%
* Percent Daily Values are based on a 2000 calorie diet.

Tried this recipe?

Mention @alyonascooking or hashtag #alyonascooking.