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Chocolate Hazelnut Sheet Cake

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Chocolate Hazelnut Sheet Cake 🍫🌰

A rich, fudgy sheet cake infused with hazelnut flavor and topped with a silky chocolate-hazelnut glaze—perfect for parties, potlucks, or any chocolate craving!

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Ingredients

For the Cake:

  • 2 cups (250g) all-purpose flour

  • 2 cups (400g) granulated sugar

  • ¾ cup (75g) unsweetened cocoa powder (Dutch-process preferred)

  • 1 tsp baking soda

  • ½ tsp salt

  • 2 large eggs, room temp

  • ½ cup (120ml) buttermilk (or milk + 1 tsp vinegar)

  • ½ cup (120ml) vegetable oil

  • 1 tsp vanilla extract

  • ½ cup (120ml) strong hot coffee (or boiling water)

  • ½ cup (125g) chocolate-hazelnut spread (e.g., Nutella), slightly warmed

For the Glaze:

  • ½ cup (125g) chocolate-hazelnut spread

  • ¼ cup (60ml) heavy cream (or milk)

  • 1 cup (120g) powdered sugar, sifted

  • ½ tsp vanilla extract

  • Pinch of salt

Optional Toppings:

  • Chopped toasted hazelnuts

  • Chocolate shavings

  • Flaky sea salt

Instructions

1. Preheat & Prep

  • Preheat oven to 350°F (175°C).

  • Grease a 9×13-inch sheet pan or line with parchment paper.

2. Make the Cake Batter

  1. In a large bowl, whisk flour, sugar, cocoa, baking soda, and salt.

  2. Add eggs, buttermilk, oil, and vanilla; mix until smooth.

  3. Stir in hot coffee (batter will be thin).

  4. Swirl in warmed chocolate-hazelnut spread (don’t overmix—leave streaks!).

3. Bake

  • Pour batter into the pan and bake 25-30 minutes, until a toothpick comes out clean.

  • Cool completely in the pan.

4. Make the Glaze

  1. Warm chocolate-hazelnut spread and cream in a microwave (30 sec bursts) until smooth.

  2. Whisk in powdered sugar, vanilla, and salt.

  3. Pour over the cooled cake, spreading evenly.

5. Garnish & Serve

  • Sprinkle with toasted hazelnuts, chocolate shavings, or sea salt.

  • Cut into squares and enjoy!

Tips for Success

✔ Extra hazelnut flavor? Add 1 tsp hazelnut extract to the batter.
✔ No coffee? Use boiling water + 1 tsp instant espresso powder.
✔ Storage: Keep covered at room temp for 3 days or refrigerate for up to 1 week.

This decadent, crowd-friendly cake is a chocolate-hazelnut lover’s dream! Perfect for birthdays, holidays, or just because. 😍🍴

Enjoy! Let me know if you’d like a low-carb version or other variations. 😊

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