Fudge Sheet Cake

Prep: 10 min Cook: 15 min Serves: 12 Cuisine: American

A rich, moist chocolate sheet cake featuring deep cocoa flavor and a tender crumb. Perfect for family gatherings or casual celebrations, this cake offers a classic taste with hints of cinnamon and vanilla, topped with a fudgy, irresistible finish that appeals to all chocolate lovers.

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Ingredients

  • 2 cups sugar
  • 2 cups flour
  • 1 cup water
  • 1/4 teaspoon salt
  • 3.5 tablespoons cocoa
  • 2 sticks butter
  • 1/2 cup buttermilk
  • 1 teaspoon vanilla
  • 1 teaspoon soda
  • 2 eggs
  • 1 teaspoon cinnamon

Instructions

  1. Set aside the flour and sugar.
  2. Heat water, salt, cocoa, and butter until the mixture is combined and the butter is melted.
  3. Add the sugar and flour to the mixture and stir well.
  4. Add the buttermilk, vanilla, soda, eggs, and cinnamon. Mix until smooth.
  5. Pour the batter into a prepared baking sheet.
  6. Bake at 350°F (175°C) for 15 to 20 minutes, or until a toothpick inserted into the center comes out clean.

Tips & Substitutions

For a richer flavor, consider using high-quality cocoa powder. If you’re out of buttermilk, you can make a quick substitute by mixing 1/2 cup of milk with 1/2 tablespoon of vinegar or lemon juice and letting it sit for five minutes. Ensure to bake until just done, as overbaking can dry out the cake. For a fun twist, add chocolate chips or nuts to the batter.

Serving Suggestions

This fudge sheet cake is delightful on its own, but it pairs beautifully with a scoop of vanilla ice cream or a dollop of whipped cream. For an extra layer of flavor, drizzle with chocolate ganache or serve alongside a slice of Strawberry Rhubarb Pie for a refreshing contrast. Great for potlucks and gatherings, it’s a crowd-pleaser.

Storage & Reheating

Allow the fudge sheet cake to cool completely before storing. Cover it with plastic wrap or transfer it to an airtight container. It can be stored at room temperature for up to 3 days or refrigerated for up to a week. If reheating, place individual slices in the microwave for about 10-15 seconds until warm.

Nutrition & Diet Analysis (per serving)

Each serving of Fudge Sheet Cake contains roughly 273 calories, with 4g protein, 27g carbohydrates, and 12g fat. It is a good source of vitamin C (16% of the Daily Value).

273 kcal 14% DV
Protein Fat Carbs

Macronutrients

Protein 3.7g 7% DV
Total Fat 12g 15% DV
Carbs 27.2g 10% DV
Fiber 2.5g 9% DV
Sugar 5.6g 11% DV

Electrolytes

Sodium 297.8mg 13% DV
Potassium 248.5mg 5% DV
Cholesterol 33.3mg 11% DV

Vitamins & Minerals

Vitamin A 27.9mcg 3% DV
Vitamin C 14.7mg 16% DV
Vitamin D 0.5mcg 3% DV
Calcium 83mg 6% DV
Iron 0.9mg 5% DV
Diet fit Under 400 cal
Contains Milk Egg Wheat/Gluten

Estimated from ingredients & per-serving nutrition — verify against package labels for allergies or strict diets.

* % Daily Values based on a 2,000 calorie diet (FDA 2020).

Frequently Asked Questions

Can I make this cake ahead of time?

Yes, you can make the fudge sheet cake a day in advance. Just store it properly as mentioned above. It often tastes even better the next day as the flavors meld. If you plan to frost it, wait until just before serving to maintain the texture and appearance.

What can I use instead of eggs in this recipe?

If you're looking for an egg substitute, you can use 1/4 cup of unsweetened applesauce per egg or a flaxseed meal mixture (1 tablespoon of flaxseed meal mixed with 2.5 tablespoons of water, let sit for 5 minutes). Both will help bind the ingredients together while keeping the cake moist.

How do I know when the cake is done baking?

The cake is done when a toothpick inserted into the center comes out clean or with just a few moist crumbs attached. Start checking around the 15-minute mark, as oven temperatures can vary. Avoid opening the oven door too often, as this can affect baking time.

Nutrition is estimated from USDA FoodData Central ingredient data and may vary with brand, portion and preparation — see our methodology. This information is for general educational purposes only and is not medical or dietary advice (disclaimer).

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