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Rich & Moist Chocolate Sheet Cake – Easy, Fudgy & Crowd-Pleasing

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A rich, ultra-moist chocolate sheet cake topped with warm fudgy cocoa frosting. Easy, crowd-pleasing, and perfect for birthdays, potlucks, and casual celebrations.

Ingredients

Scale

Cake:

  • 2 cups all-purpose flour

  • 2 cups granulated sugar

  • ½ cup unsweetened cocoa powder

  • 1 tsp baking soda

  • ½ tsp salt

  • 1 cup unsalted butter

  • 1 cup hot water or coffee

  • ½ cup buttermilk

  • 2 large eggs

  • 2 tsp vanilla extract

Frosting:

  • ½ cup butter

  • ¼ cup cocoa powder

  • ¼ cup milk

  • 2 cups powdered sugar

  • 1 tsp vanilla extract

  • Optional: ½ cup chopped pecans

Instructions

  • Preheat oven to 350°F. Grease a 9×13″ baking dish or sheet pan.

  • Whisk together flour, sugar, cocoa, baking soda, and salt.

  • In a saucepan, melt butter with water or coffee and buttermilk. Remove from heat and whisk in eggs and vanilla.

  • Combine wet and dry mixtures. Stir until smooth.

  • Pour into pan. Bake 30–35 minutes (or 18–22 minutes for sheet pan), until a toothpick comes out with moist crumbs.

  • While cake bakes, make frosting: melt butter, whisk in cocoa and milk, then powdered sugar and vanilla.

  • Pour warm frosting over warm cake. Let cool before slicing.

Notes

  • For thinner cake, use a half sheet pan.

  • Add espresso powder to enhance flavor.

  • Serve with ice cream or berries.