Classic American Flag Sheet Cake

Name: Classic American Flag Sheet Cake
Prep time: 20 min
Cook time: 22 min
Total time: 42 min
Yield: 24
Cuisine: American
Ingredients: 2 cups all purpose flour; 1 1/2 cups granulated sugar; 2 teaspoons baking powder; 1/2 teaspoon salt; 3/4 cup unsalted butter, softened; 1 cup whole milk; 2 large eggs; 1 teaspoon vanilla extract; 8 ounces cream cheese, softened; 1/2 cup unsalted butter, softened; 3 cups powdered sugar; 1 teaspoon vanilla extract; 2 cups fresh strawberries, halved; 1 cup fresh blueberries

This fluffy vanilla sheet cake topped with creamy frosting and fresh berries is the perfect dessert for any summer celebration.

By Recipes By Nani· 🌍 American· July 18, 2026

recipesbynani.com

Prep

20 minutes

Cook

22 minutes

Total

42 minutes

Serves

There is nothing quite like a giant sheet cake to feed a hungry crowd at a summer party. This vanilla cake is moist and light, making it a hit with kids and adults alike. It has become a staple in my kitchen for every holiday because it looks impressive but is actually quite simple to assemble.

My best tip for this recipe is to make sure your butter and cream cheese are softened to room temperature before you start. This ensures your frosting stays smooth and spreadable without any lumps. You can also wash and dry your berries well in advance so they are ready to go as soon as the cake cools.

🧺 Ingredients

2 cups all purpose flour
1 1/2 cups granulated sugar
2 teaspoons baking powder
1/2 teaspoon salt
3/4 cup unsalted butter, softened
1 cup whole milk
2 large eggs
1 teaspoon vanilla extract
8 ounces cream cheese, softened
1/2 cup unsalted butter, softened
3 cups powdered sugar
1 teaspoon vanilla extract
2 cups fresh strawberries, halved
1 cup fresh blueberries

👩‍🍳Instructions

1
Preheat your oven to 350 degrees F and grease a standard cookie sheet pan with butter or cooking spray.
2
In a large bowl, whisk together the flour, sugar, baking powder, and salt.
3
Add the softened butter, milk, eggs, and vanilla extract. Beat the mixture on medium speed until smooth and well combined.
4
Pour the batter into your prepared pan and spread it out evenly with a spatula.
5
Bake for 18 to 22 minutes or until a toothpick inserted into the center comes out clean. Let the cake cool completely.
6
For the frosting, beat the softened cream cheese and butter together until creamy. Gradually add the powdered sugar and vanilla, beating until light and fluffy.
7
Spread the frosting evenly over the cooled cake.
8
Arrange the blueberries in the top left corner to form the square for the stars and use the strawberries to create stripes across the rest of the cake.

💡 Tips

Store any leftover cake in the refrigerator, covered tightly with plastic wrap to keep the fruit fresh. If you are serving this for a different occasion, feel free to arrange the berries in any pattern you like or use other fruits such as raspberries or kiwi.

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