Description
A celebratory treat combining nostalgic birthday cake flavor with a dense, chewy blondie texture. Using a boxed cake mix for a quick shortcut, these fudgy bars are packed with rainbow sprinkles and white chocolate chips for a rich funfetti experience.
Ingredients
The Batter
- 1 (13.25-oz) box yellow or vanilla cake mix
- 1/4 cup vegetable oil
- 6 tbsp whole milk (room temp)
- 1 large egg (room temp)
The Mix-ins
- 1/2 cup rainbow ‘jimmie’ sprinkles
- 1/2 cup white chocolate chips
Instructions
Prep: Preheat oven to 350°F. Line an 11×7 pan with parchment.
Mix: Combine dry cake mix, oil, egg, and milk. Stir until well combined (batter will be very thick).
Fold: Gently stir in sprinkles and white chocolate chips.
Spread: Press the heavy batter into the pan and smooth the surface.
Bake: Bake for 25–30 mins. Pull when edges are brown but center is soft. Cool for 30 mins to firm up.
Notes
The ‘Jimmies’ Rule: Use rod-shaped sprinkles to prevent color bleeding; nonpareils will turn the batter grey.
Don’t Overbake: Pull the pan while the center still has a slight jiggle to ensure a fudgy, not dry, texture.
Handling Thick Batter: Lightly dampening your hands helps press the sticky dough into the corners without it sticking to you.
- Prep Time: 10 minutes
- Cook Time: 30 minutes
- Category: Dessert / Snack Bars
- Method: One-Bowl / Baking
- Cuisine: American Funfetti Inspired
Nutrition
- Serving Size: 1 Bar
- Calories: 210
- Sugar: 18
- Sodium: 240
- Fat: 9
- Saturated Fat: 3
- Unsaturated Fat: 6
- Trans Fat: 0
- Carbohydrates: 31
- Fiber: 0.5
- Protein: 2
- Cholesterol: 15
Keywords: cake batter blondies, funfetti dessert bars, easy cake mix recipes, white chocolate sprinkle bars, birthday cake blondies