Gooey White Chocolate Fluffernutter Cake Bars
These indulgent cake bars combine the classic fluffernutter flavor combination with rich white chocolate in an irresistible dessert. A tender yellow cake base is topped with a creamy layer of peanut butter and marshmallow fluff mixed with sweetened condensed milk, then finished with white chocolate chips. The bars bake to a perfectly gooey consistency that sets as they cool. Perfect for potlucks, bake sales, or when you want a crowd-pleasing dessert that's easy to make and transport.
Ingredients
Instructions
- 1
Place cake mix, egg, and butter into a large bowl and mix until well combined to thick cookie dough consistency
- 2
Press dough into prepared baking pan
- 3
Combine peanut butter, marshmallow fluff and condensed milk in a large bowl until well mixed
- 4
Pour mixture over crust and top with white chocolate chips
- 5
Bake for 23-25 minutes until cooked through with slightly jiggly center
- 6
Cool completely before cutting into squares
Tips
Use your hands toward the end of mixing to achieve proper cookie dough consistency for the base layer
The center will appear jiggly when done but will set properly as it cools completely
Let bars cool completely before cutting to ensure clean slices and proper texture
Good to Know
Store covered at room temperature for up to 3 days or refrigerate for up to 1 week
Can be made 1-2 days ahead and stored covered
Serve at room temperature for best gooey texture
Common Mistakes
Don't overbake or bars will become dry instead of gooey
Press crust firmly to prevent crumbling when cut
Substitutions
Similar flavor profile
FAQ
Can I use homemade cake mix instead of boxed?
Yes, but you'll need about 2 cups of dry cake mix. The texture may vary slightly from the original recipe.
What if I don't have marshmallow fluff?
You can substitute with mini marshmallows melted down, but the texture will be slightly different and less smooth.
How long do these bars keep?
They stay fresh for 3 days at room temperature or up to 1 week refrigerated in an airtight container.