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Perfect Class of 2026 Chocolate Sheet Cake Recipe with Fondant Diploma Tutorial

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A rich, moist chocolate sheet cake topped with a festive fondant diploma, perfect for graduation celebrations. This quick and easy recipe combines classic chocolate flavor enhanced with brewed coffee and a creamy homemade frosting.

Ingredients

Scale
  • 2 cups (250g) all-purpose flour
  • 2 cups (400g) granulated sugar
  • 3/4 cup (75g) unsweetened cocoa powder
  • 1 1/2 teaspoons baking powder
  • 1 1/2 teaspoons baking soda
  • 1 teaspoon salt
  • 1 cup (240ml) whole milk, room temperature (or almond milk for dairy-free)
  • 1/2 cup (120ml) vegetable oil
  • 2 large eggs, room temperature
  • 2 teaspoons pure vanilla extract
  • 1 cup (240ml) hot brewed coffee (or hot water)
  • 1/2 cup (115g) unsalted butter, softened
  • 2/3 cup (65g) unsweetened cocoa powder
  • 3 cups (375g) powdered sugar
  • 1/3 cup (80ml) whole milk
  • 1 teaspoon vanilla extract
  • White fondant (about 8 oz or 225g), store-bought or homemade
  • Black edible food marker or gel icing for writing
  • Small rolling pin and sharp knife or pizza cutter
  • Optional: Ribbon or edible gold dust for decoration

Instructions

  1. Preheat your oven to 350°F (175°C). Grease a 9×13 inch (23×33 cm) sheet cake pan with butter or non-stick spray and lightly dust with flour. Set aside.
  2. In a large bowl, sift together flour, sugar, cocoa powder, baking powder, baking soda, and salt.
  3. In a separate bowl, whisk milk, vegetable oil, eggs, and vanilla extract until smooth.
  4. Slowly pour the wet ingredients into the dry ingredients, mixing gently with a spatula or mixer on low speed until combined. Avoid over-mixing.
  5. Carefully stir in hot brewed coffee until the batter is smooth. The batter will be thin.
  6. Pour the batter into the prepared pan and smooth the top. Bake for 35-40 minutes or until a toothpick inserted in the center comes out clean or with a few moist crumbs.
  7. Let the cake cool in the pan for about 15 minutes, then transfer to a wire rack to cool completely.
  8. To make frosting, cream softened butter and cocoa powder using a mixer on medium speed until smooth. Gradually add powdered sugar alternated with milk, beating to spreading consistency. Stir in vanilla extract.
  9. Once the cake is fully cool, spread the frosting evenly over the top with a spatula. Smooth or create swirls for texture.
  10. Roll out white fondant on a clean surface to about 1/8 inch (3mm) thickness. Cut into small rectangles roughly 3×1.5 inches (7.5×4 cm). Using an edible marker, write “Class of 2026” or a short message. Optionally, roll thin strips of fondant to create a scroll effect or tie with a tiny edible ribbon. Place on top of the frosted cake.

Notes

[‘Use room temperature eggs and milk for even mixing and a tender cake.’, ‘Do not skip the hot coffee; it enhances chocolate flavor without tasting like coffee.’, ‘Watch baking time closely to avoid drying out the cake; start checking at 35 minutes.’, ‘Frost only on a completely cooled cake to prevent melting.’, ‘Dust fondant surface lightly with cornstarch or powdered sugar to avoid stickiness.’, ‘Practice writing on fondant before decorating the cake.’, ‘For gluten-free, use a gluten-free flour blend and ensure baking powder is gluten-free.’, ‘For dairy-free, substitute milk with almond or oat milk and use dairy-free margarine or coconut oil in frosting.’, ‘Fondant decorations can be stored in an airtight container at room temperature for up to a week.’, ‘Cake can be baked a day ahead and frosted the next day for best texture.’, ‘Store leftover cake covered at room temperature for 2 days or refrigerated for 4-5 days; bring to room temperature before serving.’, ‘Freeze wrapped cake or

Nutrition

Keywords: chocolate sheet cake, graduation cake, fondant diploma, easy chocolate cake, moist chocolate cake, chocolate frosting, celebration cake