Sheet Cake Recipe for 40 People: Easy and Delicious

When hosting a large gathering, a sheet cake is an ideal choice due to its ease of preparation and ability to serve many guests effortlessly. This recipe for a moist, flavorful sheet cake scaled to serve 40 people ensures everyone gets a generous slice, making your event both sweet and memorable.

Ingredients

• 3 ½ cups all-purpose flour
• 3 cups granulated sugar
• 1 tablespoon baking powder
• 1 teaspoon salt
• 1 cup unsalted butter, softened
• 4 large eggs
• 1 tablespoon vanilla extract
• 1 ½ cups whole milk
• Optional: 1 cup sour cream (for extra moistness)

Instructions

1. Preheat your oven to 350°F (175°C). Grease a large 12×18 inch sheet pan and line it with parchment paper for easy removal.
2. In a large mixing bowl, whisk together the flour, sugar, baking powder, and salt until well combined.
3. In a separate bowl, beat the softened butter until creamy using a hand or stand mixer. Add eggs one at a time, beating well after each addition. Mix in the vanilla extract.
4. Gradually add the dry ingredients to the wet mixture, alternating with the milk (start and end with the dry ingredients). Mix just until combined. If using, fold in sour cream for extra moisture.
5. Pour the batter into the prepared sheet pan and spread evenly with a spatula.
6. Bake in the preheated oven for 35-40 minutes, or until a toothpick inserted into the center comes out clean. Avoid overbaking to keep the cake moist.
7. Remove from oven and allow to cool in the pan for about 15 minutes. Then, transfer to a wire rack to cool completely before frosting.
8. Once cooled, frost with your favorite frosting—cream cheese, chocolate, vanilla buttercream, or whipped cream are all excellent options.

Tips

• Use room temperature ingredients (butter, eggs, milk) for a smoother batter and better rise.
• For a richer flavor, substitute half of the milk with buttermilk or sour cream.
• Ensure the oven is fully preheated before baking for even cooking.
• Do not overmix the batter; mix just until ingredients are combined to keep the cake tender.

Serving Suggestions

This sheet cake pairs beautifully with a variety of frostings and toppings. Consider serving slices with fresh berries, a dusting of powdered sugar, or a drizzle of chocolate ganache. For a festive touch, add sprinkles or edible flowers on top. It’s perfect for birthday parties, potlucks, or large family gatherings.

Variations

• Chocolate Sheet Cake: Add ¾ cup of cocoa powder to the dry ingredients for a rich chocolate flavor. Use chocolate frosting and chocolate chips for extra indulgence.
• Lemon Sheet Cake: Incorporate 2-3 tablespoons of lemon zest into the batter and replace some of the milk with lemon juice. Top with lemon glaze or cream cheese frosting flavored with lemon.
• Banana Sheet Cake: Mash 2 ripe bananas and fold into the batter. Use a cream cheese or caramel frosting to complement the banana flavor.
• Vegan Version: Substitute dairy ingredients with plant-based alternatives: use almond or soy milk, vegan butter, and flaxseed meal instead of eggs.

Storage and Reheating

Store the cooled sheet cake in an airtight container at room temperature for up to 2 days. For longer storage, wrap tightly with plastic wrap and refrigerate for up to 5 days. To reheat, warm individual slices in the microwave for about 15-20 seconds or at 350°F in the oven for 10 minutes. The cake remains moist and delicious when properly stored and reheated.

Frequently Asked Questions

Can I make this cake ahead of time?

Yes, you can prepare the cake a day in advance. Store it covered at room temperature or refrigerated if frosted. Frosted cakes can be kept in the fridge for up to 2 days, but bring to room temperature before serving for optimal flavor and texture.

Can I freeze leftovers?

Absolutely. Wrap individual slices or the whole cake tightly in plastic wrap and then place in an airtight container or freezer bag. Freeze for up to 3 months. Thaw in the refrigerator overnight and reheat slightly if desired.

What type of frosting works best for this sheet cake?

Cream cheese frosting, vanilla buttercream, chocolate ganache, or whipped cream all work well. Choose based on your flavor preference and the occasion. Make sure the frosting is spread evenly for an attractive presentation.

How do I know when the cake is done?

Insert a toothpick into the center of the cake; if it comes out clean or with a few moist crumbs, the cake is ready. The edges should slightly pull away from the sides of the pan, and the top should be golden brown.

Can I scale this recipe down for fewer people?

Yes, you can halve or third the ingredients for smaller batches. Just ensure you use a smaller baking pan and adjust the baking time accordingly. Keep an eye on the cake as it bakes to prevent overcooking.

Are there gluten-free options for this cake?

Yes, substitute the all-purpose flour with a gluten-free flour blend designed for baking. You might need to add a binding agent like xanthan gum if not included in your blend. Baking times may vary slightly, so monitor the cake closely.

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