Long Island Chocolate Cake
Description: The taste of this cake surprises everyone who eats it; starchy – sweet. The addition of the potato keeps it from being too sweet. Do not use baking potatoes or the potato (starchy) flavor will overwhelm. A red-skinned potato is best. The cake is dense and keeps well.

- Cook Time: 40 minutes
- Prep Time: 1 hour
- Total Time: 1 hour 40 minutes
- Recipe Category: Dessert
- Keywords: Weeknight, Less than 4 Hours
- Recipe Yield: 2 9-inch cake layers
Nutritional Information (per serving):
- Calories: 3672.3
- Fat Content: 160.5g
- Saturated Fat Content: 95.8g
- Cholesterol Content: 734.1mg
- Sodium Content: 2264.8mg
- Carbohydrate Content: 541.5g
- Fiber Content: 19.3g
- Sugar Content: 378.3g
- Protein Content: 44.7g
Ingredients:
Ingredient | Quantity |
---|---|
All-purpose flour | 2 1/2 cups |
Baking soda | 2 tsp |
Butter | 2 cups |
Sugar | 1 1/2 cups |
Eggs | 4 |
Potato | 4 |
Vanilla | 1 tbsp |
Butter (for frosting) | 2 tbsp |
Hot water | 1/2 cup |
Powdered sugar | 1/2 cup |
Vanilla (for frosting) | 1 tsp |
Instructions:
-
Prepare Cake Batter:
- Grease and flour two 9″ cake pans.
- Measure flour and baking soda into a sifter.
- Melt the chocolate in a large Pyrex (or other heatproof) bowl over a pot of boiling water. Let cool slightly.
- Add butter and sugar and cream until fluffy.
- Beat in eggs, one at a time until blended.
- Stir in potato and vanilla.
- Sift into batter one-third of the flour. Stir in by hand until moist.
- Add one-third of milk. Stir until blended.
- Alternate flour and milk until all is used up. End with flour.
- Pour into prepared pans.
-
Bake:
- Bake in a preheated 350°F (175°C) oven until the top springs back when lightly touched, about 40 minutes.
- Remove from oven and cool until easy to handle.
- Remove from pans and cool completely on racks.
-
Prepare Frosting:
- Melt the butter and cocoa in a saucepan.
- Beat the sugar in a little at a time until it makes a paste.
- Add vanilla. The frosting will be too stiff to spread.
- Add hot water one teaspoon at a time until spreadable.
-
Frost and Assemble Cake:
- Frost and fill the cake.
This Long Island Chocolate Cake is a delightful surprise with its unique addition of potato, resulting in a dense, flavorful cake that keeps well. Enjoy the rich chocolate flavor balanced perfectly with the sweetness of the potato. Perfect for a weeknight treat or any special occasion when you’re short on time but still crave something indulgent!