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Cake Batter Blondies Recipe

These Cake Batter Blondies are a recipe that you won't want to miss out on. They are probably one of the best blondies you will ever taste, and are so easy to make.
Prep Time40 mins
Cook Time30 mins
Total Time1 hr 10 mins
Course: Dessert
Cuisine: American
Keyword: blondies, cake batter, Easy Dessert Recipe, favorite dessert recipe
Servings: 16
Calories: 289kcal


  • 9x13 Inch Baking Dish
  • Non-stick Cooking Spray
  • Large Mixing Bowl (2)


  • 15.25 ounces funfetti cake mix 1 box
  • ¼ cup vegetable oil
  • 1 egg
  • cup milk
  • ½ cup white chocolate chips


  • ¼ cup butter softened
  • 2 Tablespoons milk
  • 1 teaspoon vanilla
  • 2 cups powdered sugar  (more or less depending on how thick/runny you like it)
  • 4 drops red food coloring optional
  • ½ cup sprinkles for the top


  • Preheat oven to 350 degrees. Spray a 9x9 inch glass pan with non-stick cooking spray.
  • Combine the cake mix, oil, and egg in a large bowl.
  • Add the milk to the bowl slowly, you want the batter to remain as dense as possible.
  • Fold in the rainbow sprinkles and white chocolate chips.
  • Pour batter in pan and spread to the edges.
  • Bake for 25-30 minutes (they will be a little soft/gooey in the middle- just let them sit for about 20-30 minutes and they will set up).
  • Cool completely.
  • To make frosting, combine all frosting ingredients together in a bowl and frost bars.
  • If frosting is too thick, add a little more milk.


  • Yellow cake mix can be used instead of funfetti cake mix. You will need to add 1/4 cup of sprinkles to the mix. (frosting is optional because these taste amazing without frosting, but I am a serious frosting lover, so I added some and loved the way it turned out).


Calories: 289kcal | Carbohydrates: 43g | Protein: 3g | Fat: 13g | Saturated Fat: 7g | Trans Fat: 1g | Cholesterol: 20mg | Sodium: 261mg | Potassium: 120mg | Fiber: 1g | Sugar: 33g | Vitamin A: 117IU | Vitamin C: 1mg | Calcium: 62mg | Iron: 1mg