Blueberry Poke Cake


A delicious, fresh blueberry sauce adds a beautiful color to this white sheet cake. Top each serving with sweetened whipped cream and garnish with fresh blueberries, if desired.

Prep Time:
10 mins
Cook Time:
35 mins
Additional Time:
25 mins
Total Time:
1 hrs 10 mins
1 9x13-inch cake


  • 1 (15.25 ounce) package white cake mix (such as Pillsbury®)

  • 3 ounces white cake mix extender

  • 1 ¼ cups water

  • 4 egg whites

  • cup vegetable oil

  • 1 cup white sugar

  • 2 tablespoons cornstarch

  • 1 ½ cups fresh blueberries

  • 1 cup water

  • 1 teaspoon lemon juice


  1. Preheat the oven to 350 degrees F (175 degrees C). Grease and lightly flour a 9x13-inch baking pan.

  2. Blend cake mix plus extender, 1 1/4 cups water, egg whites, and oil together in a bowl using an electric mixer until just moistened. Pour batter into the prepared pan.

  3. Bake in the preheated oven until a toothpick inserted into the center of the cake comes out clean, 32 to 26 minutes.

  4. While cake is baking, stir sugar and cornstarch together in a small saucepan over medium heat. Add 1 cup water and bring to a boil, stirring constantly. Add blueberries and lemon juice; cook and stir until blueberries burst and sauce turns a deep purple color, about 10 minutes. Gently mash any berries that did not burst. Remove from heat and let cool until cake is ready.

  5. Transfer cake to a cooling rack and let cool to room temperature, at least 25 minutes.

  6. Poke holes into the cake about 1 inch apart using the handle of a wooden spoon. Slowly pour the warm blueberry sauce over cake. Refrigerate until cool before slicing.

Cook's Note:

The directions for making the cake are based on the particular brand mentioned. Follow instructions on the box if using a different brand. Some cake mixes are 16.25 ounces, and some are 15.25, so add the appropriate amount of extender as needed to reach 18.25 ounces.

Nutrition Facts (per serving)

323 Calories
11g Fat
54g Carbs
3g Protein
Nutrition Facts
Servings Per Recipe 12
Calories 323
% Daily Value *
Total Fat 11g 14%
Saturated Fat 2g 9%
Sodium 306mg 13%
Total Carbohydrate 54g 20%
Dietary Fiber 1g 3%
Total Sugars 42g
Protein 3g
Vitamin C 2mg 11%
Calcium 86mg 7%
Iron 1mg 4%
Potassium 84mg 2%

* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

** Nutrient information is not available for all ingredients. Amount is based on available nutrient data.

(-) Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.

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