Why use sour cream and butter with the box cake mix?

Using sour cream and melted butter with the box mix in place of the standard oil and water produces a significantly more moist, more flavorful, and more tender cake that tastes genuinely bakery-quality rather than boxed. The sour cream adds fat and mild acidity that tenderizes the crumb and the butter adds a deeply satisfying dairy flavor that oil cannot replicate.

Can I make this flag cake without Cool Whip?

Yes. Whip 2 cups of cold heavy whipping cream with 2 tablespoons of powdered sugar and 1 teaspoon of vanilla to stiff peaks for a completely homemade whipped cream topping. Combine with the prepared vanilla pudding in the same proportions as the Cool Whip version. The homemade version has a richer and more dairy-forward flavor.

How far in advance can I decorate the cake?

Add the blueberries and strawberry decorations no earlier than a few hours before serving for the most vibrant and beautiful berry appearance. Berries added too far in advance can release juice that bleeds into the white whipped topping and makes the flag decoration appear less crisp and defined.

Flag Cake Easy Patriotic 4th of July Strawberry Blueberry Recipe

Name: Flag Cake The Most Easy and Festive Patriotic 4th of July Sheet Cake You Will Make
Prep time: 20 min
Cook time: 30 min
Total time: PT-497459H12M17S
Cuisine: American
Ingredients: 1 box 15.25 oz White or Vanilla Cake Mix; 3 large Eggs room temperature; 1/2 cup Full-Fat Sour Cream room temperature; 1 cup Cold Whole Milk; 1/2 cup Unsalted Butter melted; 2 cups Cold Whole Milk for topping; 1 box 3.4 oz Instant Vanilla Pudding Mix; 1 container 8 oz Cool Whip Whipped Topping thawed; Fresh Blueberries; Sliced Fresh Strawberries; Mini Marshmallows optional; Unsweetened Shredded Coconut optional

Description

The most festive and easy Flag Cake made with a white box cake mix enhanced with room temperature eggs sour cream cold milk and melted butter for a bakery-quality vanilla sheet cake baked in a 9×13-inch pan topped with a light vanilla pudding Cool Whip topping and decorated with fresh blueberries in the upper left corner and rows of sliced strawberries to create an American flag pattern serving 24 people. A completely spectacular and crowd-pleasing patriotic 4th of July dessert.

Ingredients

Scale

1 box 15.25 oz White or Vanilla Cake Mix

3 large Eggs room temperature

1/2 cup Full-Fat Sour Cream room temperature

1 cup Cold Whole Milk

1/2 cup Unsalted Butter melted

2 cups Cold Whole Milk for topping

1 box 3.4 oz Instant Vanilla Pudding Mix

1 container 8 oz Cool Whip Whipped Topping thawed

Fresh Blueberries

Sliced Fresh Strawberries

Mini Marshmallows optional

Unsweetened Shredded Coconut optional

Instructions

1. Stir cake mix, room temperature eggs, room temperature sour cream, cold milk, and melted butter until smooth.

2. Transfer to greased 9×13-inch pan. Spread evenly.

3. Bake according to cake mix box temperature and time instructions.

4. Cool completely on wire rack 30 to 45 minutes.

5. Whisk cold milk with instant vanilla pudding mix 2 minutes until thickened.

6. Stir pudding and thawed Cool Whip together until smooth.

7. Spread vanilla whipped topping evenly across completely cooled cake.

8. Outline square in upper left corner with blueberries. Fill in with more blueberries leaving white star spaces.

9. Fill star spaces with mini marshmallows if desired.

10. Arrange strawberry slices in 4 to 5 horizontal rows for red stripes.

11. Fill between strawberry rows with shredded coconut for white stripes or leave white.

12. Refrigerate at least 1 to 2 hours before serving. Serve cold.

Prep Time: 20 minutes
Cook Time: 30 minutes
Category: Dessert, Cake, Patriotic
Method: Baking
Cuisine: American

Nutrition

Serving Size: 1 slice
Calories: 107
Sugar: 6g
Sodium: 127mg
Fat: 7g
Saturated Fat: 4g
Unsaturated Fat: 2g
Trans Fat: 0g
Carbohydrates: 9g
Fiber: 1g
Protein: 3g
Cholesterol: 52mg

Keywords: flag cake, 4th of July flag cake recipe, patriotic sheet cake strawberries blueberries, easy American flag cake for Fourth of July