Heavenly Hash Chocolate Snack Cake

heavenly hash snack cake recipe
Heavenly Hash – Husband’s Grandmother’s Recipe

Heavenly Hash Recipe

A chocolate dessert or snack cake with marshmallows and pecans that my husband enjoyed while growing up. The recipe came from his grandmother, Mrs. Opal Burchfield. Mrs. Opal I called her. She’s been gone now for almost 25 years, so as you can imagine, it’s a very old recipe.

I was surprised when I did an internet search to find that the name Heavenly Hash turned up recipes for anything from fruit salad to candy, to ice cream! Sounds like you can come up with any concoction of goodies and call it Heavenly Hash)))

I’m not sure when she wrote this recipe but it’s in her own handwriting. She was 91 when she passed away so I’m sure she wrote this many years before that.

Mrs. Opal’s Heavenly Hash Recipe


Even before my husband and I married, I had opportunities to enjoy Mrs. Opal’s Heavenly Hash. Anytime there was a function in the community, at church, a family gathering, or a death, you would always find a tray of these chocolate marshmallow goodies that Mrs. Opal had sent.

You know we’re in the south and I reckon we think that when someone dies, the family will immediately go hungry, so we take food. All jokes aside, it’s a very kind gesture and if you have been on the receiving end of it you do appreciate it. I’m not making light of it)))

Heavenly Hash Recipe

Heavenly Hash has a brownie or cake-like base, then a layer of lightly toasted marshmallows and a chocolate fudge frosting, You cut them into small squares, They are very rich so you don’t need large pieces. They remind me very much of chocolate marshmallow bunnies. Who doesn’t love those!


2 Cups Sugar

4 Tablespoons Cocoa (I like Hershey’s)

1 Cup Nuts (Chopped pecans or walnuts)

1 Cup Flour (I used self-rising)

2 Sticks Oleo Melted (I used one stick of oleo and one of butter, no particular reason, but I had a stick of oleo I thought I would get rid of)

4 Eggs

Mix the above ingredients together and spread into a prepared rectangular pan. Her hand-written recipe says loaf pan, but I don’t think that is what she meant. It wouldn’t fit into a loaf pan, so a regular 9″ x x 13″ pan is what to use.

I like to use parchment paper in the bottom of my pans and spray the paper and sides with cooking spray.

Also, I added 1 teaspoon of vanilla flavoring to my batter. I just think you have to have a little vanilla)))

Bake the cake at about 350° or a little lower depending on your oven. I bake mine at around 325″ and start checking after about 20 minutes. Do the toothpick test since all ovens are not the same.

toothpick test to test for doneness of a cake
Toothpick Inserted in Center Comes Out Clean


1 Bag of Marshmallows

The recipe calls for 1 bag of marshmallows. I used a pound bag of miniatur marshmallows. I’m not sure how many ounces came in a bag at the time that she wrote this, but I figured….more could only be better.

Remove the cake from the oven and while it’s still warm, sprinkle the miniature marshmallows on top. Return to the oven for just a few minutes for the marshmallows to begin to melt and be lightly browned.

Be sure to let the cake cool completely before frosting. It’s impossible to spread the frosting over warm marshmallows. But with them browned a little bit, and cooled, it’s a lot easier.

lightly browned marshmallows
Lightly Browned Marshmallows

Heavenly Hash Frosting

1 Box Powdered Sugar

1 Stick Oleo

4 Tablespoons Cocoa

Pet Milk

I didn’t have a box of powdered sugar, mine was in a bag. A box of confectioners sugar usually weighs 16 oz so you would think it would contain about 4 cups. But an internet search said anything from 3.5 to 3.75 cups. So I started with 3.5 thereabout. I figured I could add more if needed.

Sift the powdered sugar too. This is something that I’ve only started doing recently and it really helps to get your frosting smooth and creamy without lumps.

I added 1/2 tsp of Vanilla to my frosting too)))

You soften the oleo, or in my case, I used butter. But don’t melt it. Add the Pet milk which is just evaporated milk from a can. Pet milk has a consistency similar to half and half. It’s a little thicker than just regular milk from the frig. I used heavy cream in mine, just because I had some that needed to be used up.

But just add one tablespoon at a time until you can reach a spreadable consistency. I possibly could have thinned mine a bit more but I didn’t want to get it too thin and then have to add in extra sugar.

Drop the frosting by dollops over the cooled marshmallow topping and spread with a knife. Don’t fret if you don’t get complete coverage. Mine wasn’t. But in the end, once you cut them into squares, no one is the wiser.

Chocolate Frosting

The frosting is very fudgy. Cool completely and cut into small squares. You may have to frequently wipe off the knife and dip it in water to get clean cuts. My cuts were a bit messy but no one complained)))

Store Heavenly Hash in the refrigerator in a sealed container. It will keep for days, mine is going on 10-12 days and I just had a piece when I started writing this))

chocolate marshmallow snack cake with pecans from grandmother's recipe
Heavenly Hash


Treasure those hand-written recipes like my husband’s grandmother’s for Heavenly Hash, and keep them in a safe place. They may not seem important to you at the time, but years on down the road, they become treasures. They invoke sweet memories and we can all use as many of those as we can get)))


I’m not the only one who remembers eating these yummy bars growing up)) Here’s a Facebook comment from an old friend:

Phyllis “She would bring them to the Homecoming and Lynn and I eat our weight in them. Oweda show this to Lynn!”

Heavenly Hash

Heavenly Hash is a chocolate snack cake with marshmallow center, pecans and a fudgy topping. It's my husband's grandmother's recipe from any years ago. I even have a hand-written copy of it))
Prep Time15 minutes
30 minutes
Total Time45 minutes
Course: Dessert, Snack
Cuisine: American
Keyword: brownies, chocolate snack cake, heavenly hash
Servings: 36 pieces
Calories: 594kcal


  • 9" x 13" pan



  • 2 cup Sugar
  • 4 T Cocoa
  • 1 cup Nuts chopped pecans or walnuts
  • 1 cup Flour self-rising
  • 4 Eggs
  • 2 sticks Margarine oleo or butter melted


  • 16 oz bag Miniature Marshmallows


  • 1 box Confectioners Sugar 3.5 to 3.75 cups sifted
  • 1 stick Oleo oleo, margarine, or butter, softened, not melted
  • 4 T Cocoa
  • Pet Milk enough to spread frosting easily, add only 1 T at a time



  • Preheat oven to 350°. Prepare a 9" x 13" baking pan. Line the bottom with parchment paper. Spray the bottom and sides with cooking spray. Or grease the pan with butter
    parepare pan with parchment paper and cooking spray
  • Melt the oleo (margarine or butter)
    melted butter, oleo or margarine
  • Add the sugar to the melted oleo (or butter)
  • Add the cocoa powder and eggs one at a time. Mix well after each egg.
  • Add the chopped nuts and the flour. Add 1 tsp of vanilla flavoring if desired.
    add nuts and flour
  • Spread the mixture into the prepared pan and bake at about 350° for 20-30 minutes. Choose a lower temp if necessary and a shorter cooking time. Test the cake for doneness by inserting a toothpick into the center. When done it should come out clean.
    spread mixture into a prepared pan
  • Sprinkle marshmallows on top while the cake is still cool. Return to the oven for a few minutes for the marshmallows to melt and the top to be lightly browned. Set aside and cool completely.
    lightly browned marshmallows


  • Cream the sugar, softened (not melted) oleo or butter, and cocoa together. Add Pet milk (half and half or cream) by single tablespoon only until you reach a spreadable consistency. Drop in dollops over the completely cooled marshmallows and spread with a knife. It may or may not cover the cake completely.
    spread frosting
  • Allow the cake to sit in the refrigerator for the frosting to set. Cut into small squares with a sharp knife. Store in refrigerator.
    heavenly hash



Note: The nutritional facts are only estimates and not calculated by a nutritionist or other expert. Your serving size may vary.


Calories: 594kcal | Carbohydrates: 132g | Protein: 4g | Fat: 8g | Saturated Fat: 2g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 4g | Trans Fat: 0.01g | Cholesterol: 18mg | Sodium: 196mg | Potassium: 44mg | Fiber: 1g | Sugar: 98g | Vitamin A: 253IU | Vitamin C: 0.03mg | Calcium: 15mg | Iron: 1mg
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