White chocolate fudge with Funfetti cake mix mixed in and topped with rainbow sprinkles. Birthday Cake Fudge is perfect for any special occasion or holiday!
Another post for #SummerDessertWeek, the yearly blog event hosted by Angie of Big Bear’s Wife.
Yesterday was my youngest kiddo’s birthday! He’s 10 now! 😲 That’s what inspired this Birthday Cake Fudge.
I love all things birthday cake, cake batter, funfetti, whatever you want to call it! I love Birthday Cake Ice Cream, Funfetti Gooey Butter Cake, Cake Batter Blondie Bars!
If it involves rainbow sprinkles, I love it.
This fudge has a white chocolate base but has funfetti cake mix added and then it’s topped with lots of rainbow sprinkles! It’s great for a birthday, holiday cookie tins, or just a day when you want fudge covered in sprinkles!
Ingredients
- ¼ cup unsalted butter
- 2 cups granulated sugar
- ½ cup sour cream
- 12 ounces white chocolate
- 1 (7 ounce) jar marshmallow cream
- 1 cup Funfetti cake mix
- ⅓ cup rainbow sprinkles
Instructions
- Line a 9×9 inch pan with aluminum foil and spray with nonstick spray
- Heat butter, sugar, and sour cream over medium heat, stirring until sugar is dissolved. Bring to a boil and cook, stirring frequently, until a candy thermometer reads 234F (soft ball stage), about 5 minutes
- Remove from heat. Stir in chopped white chocolate and marshmallow cream. Stir until everything melted and combined
- Stir in Funfetti cake mix until no lumps remain
- Pour into the prepared pan. Sprinkle rainbow sprinkles on top
- Chill at least 4 hours before cutting and serving
Tips & Tricks
- You are going to need a candy thermometer (I know, I’m sorry) but I promise it goes quickly. You just want to get the candy to soft ball stage so it has a really nice fluffy texture.
- When you pour the fudge into your pan, it’s going to start setting up really fast. So have your rainbow sprinkles ready to be sprinkled on top.
- Not into funfetti? Try strawberry cake mix instead!
How Long Is Fudge Good For?
This Birthday Cake Fudge will be good for up to 2 weeks when stored at room temperature. Make sure to use an airtight container. I love storing colorful treats in this large airtight glass jar on the counter.
This fudge will be good for up to a month if stored in the fridge. These airtight glass containers are my favorite for storing pretty much anything in the fridge.
Can You Freeze Fudge?
Yes! You can freeze this fudge for up to 3 months. I suggest wrapping it in plastic wrap and them plastic in a freezer ziploc bag.
To defrost, just let it sit overnight in the refrigerator or on the counter.
More Fudge Recipes
- Buckeye Fudge
- Bourbon Praline Fudge
- Candy Corn Fudge
- Eggnog Fudge
- White Chocolate Peppermint Fudge
- Butterscotch Peanut Fudge
- Maple Bacon Fudge
- Pumpkin Pie Fudge
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Birthday Cake Fudge
Ingredients
- ¼ cup unsalted butter
- 2 cups granulated sugar
- ½ cup sour cream
- 12 ounces white chocolate roughly chopped
- 1 (7 ounce) jar marshmallow cream
- 1 cup Funfetti cake mix
- ⅓ cup rainbow sprinkles
Instructions
1. Line a 9x9 inch pan with aluminum foil and spray with nonstick spray.
2. In a large pot, heat butter, sugar, and sour cream over medium heat, stirring until sugar is dissolved. Bring to a boil and cook, stirring frequently, until a candy thermometer reads 234F (soft ball stage), about 5 minutes.
3. Remove from heat. Stir in chopped white chocolate and marshmallow cream. Stir until everything is melted and combined. It will be thick and take awhile. Once well combined. stir in Funfetti cake mix until no lumps remain.
4. Pour into the prepared pan and rotate pan so the fudge reaches the corners. Quick sprinkle sprinkles on top so they stick. Chill at least 4 hours before cutting into 36 pieces.
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Sandra says
This is such a perfect birthday cake! Everyone at my house loved this!
Cathy says
What a fun recipe for birthdays and parties!
Beth says
This fudge looks so yummy and very addicting! My husband and daughter are going to absolutely love this dessert! Excited to try this!
Catalina says
Oh my goodness! This is brilliant! I know so many people that don’t like cake but prefer a treat!
Erin | Dinners,Dishes and Dessert says
This Birthday Cake Fudge is looking totally awesome!
Krystle says
I’m a cake batter addict. This fudge is my new favorite treat.
Dorothy Reinhold says
I love how easy this is! The sprinkles are so fun and festive too!