If you’re looking to bake a large, impressive cake for a gathering or celebration, a 12×18 sheet cake is an excellent choice. It’s versatile, easy to cut into many portions, and can be customized with various flavors and fillings. This recipe provides a moist, tender cake that holds up well to decorating and serving, making it a reliable go-to for parties, events, or casual get-togethers.
Ingredients
- 2 ½ cups (310g) all-purpose flour
- 2 ½ teaspoons baking powder
- ½ teaspoon salt
- ¾ cup (170g) unsalted butter, softened
- 1 ¾ cups (350g) granulated sugar
- 3 large eggs
- 1 teaspoon vanilla extract
- 1 cup (240ml) whole milk
Instructions
- Preheat your oven to 350°F (175°C). Grease a 12×18-inch sheet pan thoroughly with butter or non-stick spray, then line it with parchment paper, leaving an overhang on the sides for easy removal.
- In a medium bowl, whisk together the flour, baking powder, and salt. Set aside.
- In a large mixing bowl, beat the softened butter and sugar on medium speed with an electric mixer until the mixture is light, fluffy, and pale, about 3-4 minutes.
- Add eggs one at a time, beating well after each addition to ensure they are fully incorporated. Mix in the vanilla extract.
- Reduce mixer speed to low and alternately add the dry ingredients and milk, beginning and ending with the dry ingredients. Mix just until combined; do not overmix, as this can make the cake dense.
- Pour the batter into the prepared sheet pan, spreading it evenly with a spatula or the back of a spoon.
- Bake in the preheated oven for 30-35 minutes, or until a toothpick inserted into the center comes out clean. Avoid opening the oven door early to prevent the cake from sinking.
- Remove from oven and let cool in the pan for about 15 minutes. Then, use the parchment overhang to lift the cake out of the pan and transfer it to a wire rack to cool completely before frosting or decorating.
Tips
- Substitutions: You can swap out the vanilla for almond extract for a different flavor profile or use buttermilk instead of milk for extra tang and moisture.
- Storage: Once cooled, store the cake in an airtight container at room temperature for up to 2 days, or refrigerate for up to 4 days. Bring to room temperature before serving for best texture.
- Common mistakes: Overmixing the batter can lead to a dense cake, so mix just until ingredients are combined. Also, avoid opening the oven door too early to prevent sinking.
- Decoration tips: This cake works well with buttercream, cream cheese frosting, or even a simple glaze. Make sure the cake is completely cooled before applying frosting to prevent melting.
Serving Suggestions
This large sheet cake is perfect for slicing into 24-30 pieces, making it ideal for parties, picnics, or school events. Decorate it with colorful sprinkles, fresh fruit, or themed toppers to match the occasion. It pairs well with a side of fresh berries or a dollop of whipped cream for an extra touch.
Variations
For a chocolate version, replace ½ cup of flour with cocoa powder or add 1 cup of chocolate chips to the batter. You can also infuse the batter with lemon zest or orange extract for citrus-flavored variations. Layered fillings like fruit preserves or custards can be added between two layers of cake for a more decadent treat. For a healthier twist, substitute some of the flour with almond flour or incorporate mashed bananas into the batter.
Storage and Reheating
Store the baked sheet cake in an airtight container at room temperature for up to 2 days. If you need to keep it longer, refrigerate for up to 4 days, covering it tightly with plastic wrap or foil. To reheat, slice the cake and warm individual pieces in the microwave for about 10-15 seconds, or serve at room temperature. If frosting has been applied, allow the cake to come to room temperature before serving for optimal texture.
Frequently Asked Questions
Can I make this cake ahead of time?
Yes, you can bake the cake a day in advance. Store it properly wrapped in plastic wrap or in an airtight container at room temperature or refrigerated. Add frosting or decorations just before serving for the freshest appearance.
Can I freeze the sheet cake?
Absolutely. Once cooled completely, wrap the cake tightly with plastic wrap and then with aluminum foil. Freeze for up to 3 months. To thaw, remove from the freezer and let it sit at room temperature for about an hour before frosting and serving.
How do I prevent the cake from sticking to the pan?
Thoroughly grease the pan with butter or non-stick spray and line it with parchment paper. Using parchment helps in easy removal and prevents sticking, especially with larger sheet cakes.
What if my cake sinks in the middle?
This often happens if the oven temperature is too high or the cake is overmixed. Make sure to bake at the correct temperature, avoid opening the oven door early, and mix just until ingredients are combined to prevent sinking.
Can I use a different size pan?
Yes, but the baking time will need adjustment. If using a smaller or larger pan, check for doneness earlier or later by inserting a toothpick into the center. A 12×18-inch pan is ideal for this recipe to get the right thickness and bake time.
What frosting works best with this cake?
This versatile cake pairs well with buttercream, cream cheese frosting, or whipped cream. For a lighter option, a simple glaze made from powdered sugar and milk also works well. Choose based on your flavor preference and the occasion.
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