Mom’s Chocolate Sheet Cake #2

Chocolate Sheet Cake #2

I found out after last week’s post that Mom Slabach had an “original” chocolate sheet cake that she used. The fact is that Aunt Peggy (her sister-in-law) had a chocolate sheet cake recipe and it was the one Mom used – at least some of the time.  By the time I married into the family in 1984, the recipe I posted last week had made its debut in Mom’s kitchen, and it’s the one I remember her using.  The recipes are a lot alike except this one uses buttermilk with baking soda instead of sour cream.  It also uses water and shortening.  The frosting recipes are identical.

Both recipes say to add the frosting while the cake is still hot.  Some folks wait until the cake is cooled and then make the frosting.  If you choose this option, you won’t need as much frosting, because the frosting won’t run down into the cake.

Take the vote for which sheet cake is best

Both recipes are great and, because we are Slabachs, we have strong opinions about which one we think is the best. That means you get to vote and break the tie.  Just kidding.  I never really took a vote; I just know there is a disagreement on which is the best.  The cake freezes well, so go ahead and try this recipe and save it for a rainy day.

My friend Allison, who was eleven, spent the day with me and helped me make this cake.  Here she is pouring the batter into the jelly roll pan.

The frosting

To make the frosting, bring the ingredients to a boil and then remove from heat.  Add confectioners sugar and vanilla.  Here is the start of the frosting, just when it is starting to boil. Once the cake is out of the oven, give it a few minutes to cool and then put the frosting on top while the cake is still warm.

Mom's Chocolate Sheet Cake #2

My Windowsill
A chocolate sheet cake with buttermilk in the batter. An easy recipe to make and fun to serve. It freezes well.
Prep Time 15 mins
Cook Time 20 mins
Total Time 35 mins
Course Dessert
Cuisine American
Servings 24


  • 2 cups sugar
  • 2 cups flour
  • 1/2 tsp salt
  • 1 stick margarine I use butter
  • 4 T. cocoa
  • 1/2 c shortening I use Crisco
  • 1 cup water
  • 2 eggs
  • 1 tsp. soda dissolved in 1/2 cup buttermilk
  • 1 tsp. vanilla
  • 1 stick margarine
  • 6 Tbsp. milk
  • 4 Tbsp. cocoa
  • 16 oz powdered sugar
  • 1 tsp. vanilla
  • 1 cup nuts optional


  • Combine flour, sugar, and salt
  • Heat margarine, cocoa, shortening, and water
  • Bring to boil.
  • Pour over dry ingredients and mix well.
  • Add eggs, buttermilk/soda, and vanilla
  • Mix well.
  • Pour into greased jelly roll pan.
  • Bake at 400 for 20 minutes
  • FROSTING directions:
  • Heat margarine, milk, and cocoa.
  • Bring to a boil. Remove from heat
  • Add powdered sugar, vanilla and nuts (optional)
  • Stir until smooth, and spread over warm cake




Mom’s Chocolate Sheet Cake

sheet cake

A Mom tradition – sheet cake.

When the Slabach family gets together for their annual Fun Weekend,  Mom’s chocolate sheet cake is often on the menu.  There are several reasons: it’s one Mom Slabach used to make, it serves a large crowd, and for chocolate-lovers, it’s sinfully delicious. This cake was on the menu this year and two of Dave’s sisters each brought a cake. These girls can make a mean sheet cake, let me tell you.  Not all the cake was eaten because only 47 of the possible 73 family members made it this year.

A la mode!

sheet cake

Served with vanilla ice cream, it’s the bomb.  This cake can be made ahead and frozen, which also makes it convenient.  It’s an easy pull-out-of-the-freezer dessert (if it makes it in there first, anyhow).

The recipe is easy to make.  Mix dry  ingredients, then add eggs and sour cream with baking soda.  For the frosting, you mix it together oleo, milk, and cocoa and bring to a boil.  Add confectioner’s sugar and vanilla, then spread over the cake.

I know this is a sweet cake – and you really can decrease the sugar if you’d like.

chocolate in bowl

Mom's Sheet Cake

My Windowsill
A delicious chocolate sheet cake that is bound to delight both family and friends.
Prep Time 15 mins
Cook Time 22 mins
Total Time 37 mins
Course Dessert
Cuisine American
Servings 24 +


  • 2 sticks oleo
  • 1 cup water
  • 2 cups flour
  • 2 cups sugar
  • 1/2 tsp. salt
  • 4 Tbsp. cocoa
  • 2 eggs
  • 1/4 cup sour cream
  • 1 tsp baking soda
  • Frosting: 1 stick oleo
  • 6 Tbsp milk
  • 4 Tbsp. cocoa
  • 1 lb. confectioners sugar
  • 1 tsp. vanilla


  • For the cake, mix the dry ingredients together.
  • Add eggs and beat well
  • Mix baking soda with sour cream and mix well into the batter.
  • Bake in greased sheet pan at 350 for 20-22 minutes.
  • For the frosting, combine oleo, milk, and cocoa
  • Bring to a boil
  • Add confectioner's sugar and vanilla.
  • Spread over the cake


Pinterest Mom's chocolate sheet cake


An addendum: After posting this recipe, I discovered that Mom had another chocolate sheet cake recipe she used before her daughter found this one.  I will be posting that recipe next week.  Stay tuned. It’s called Mom’s Chocolate Sheet Cake #2 (although it really was the first one she used).

This recipe was first posted six years ago. I’m bringing it back for new readers. I’ll also post Sheet Cake #2 next week.)