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Cake Batter Blondies

Chewy and butter-rich Cake Batter Blondies are so easy to make! Don’t forget to top them with the sweet cake batter frosting too for an over the top dessert!

Prep Time
10 mins
Cook Time
10 mins
Total Time
35 mins
Servings: 16 bars
Calories: 240 kcal
Course: Baked Goods
Cuisine: American

Ingredients

FOR THE BLONDIES:
  • 1 cup light brown sugar packed
  • ½ cup unsalted butter melted
  • 1 large egg
  • 1 teaspoon vanilla extract
  • ¼ teaspoon kosher salt
  • ¾ cup all-purpose flour
  • ½ cup dry yellow cake mix
  • ¼ cup Sprinkles
FOR THE FROSTING:
  • ¼ cup unsalted butter softened
  • 2 Tablespoons milk
  • 2 cups powdered sugar
  • 2 Tablespoons dry yellow cake mix
  • 2 Tablespoons Sprinkles

Instructions

    Cup of Yum
  1. Preheat oven to 350°F. Line an 8-inch square baking dish with parchment paper. Set aside.
  2. In a large mixing bowl, combine brown sugar with melted butter. Add in egg, vanilla and salt. Mix until blended. Add in flour and cake mix, stirring JUST until combined. Fold in sprinkles.
  3. Pour batter into prepared baking dish. Bake for 22-25 minutes. Remove from oven and cool completely.
  4. While blondies are cooling, prepare the frosting. Beat butter with milk, powdered sugar, and yellow cake mix. Once smooth, spread over cooled blondies. Add sprinkles. (I used a combination of fun sprinkles and rainbow chips). ENJOY!

Notes

  • Do not over mix. I prefer to mix the batter by hand for this recipe, especially after adding the dry ingredients. Over blending can make blondies tough.
  • Line your pan with parchment paper. This makes it so much easier to remove the blondies from the pan.
  • Let blondies cool before frosting. If you rush and add frosting to warm blondies you'll have a gooey sticky mess on your hands. I speak from experience!
  • You will not use a full box of cake mix. This recipe uses just over half a cup of mix. Store the leftovers in an ziploc bag to use for future baking.

Nutrition Information

Calories 240kcal (12%) Carbohydrates 36g (12%) Protein 1g (2%) Fat 10g (15%) Saturated Fat 6g (30%) Polyunsaturated Fat 4g Cholesterol 35mg (12%) Sodium 81mg (3%) Sugar 29g (58%)

Nutrition Facts

Serving: 16bars

Amount Per Serving

Calories 240

% Daily Value*

Calories 240kcal 12%
Carbohydrates 36g 12%
Protein 1g 2%
Fat 10g 15%
Saturated Fat 6g 30%
Polyunsaturated Fat 4g 24%
Cholesterol 35mg 12%
Sodium 81mg 3%
Sugar 29g 58%

* Percent Daily Values are based on a 2,000 calorie diet.