
I've transformed my summer pie favorite into incredible fudge! The tangy lime paired with creamy goodness makes your mouth water with every bite. People always sneak back for seconds whenever I bring this to gatherings. You'll definitely get hooked after your first taste!
What Makes This Treat Irresistible
The combo of zingy lime with creamy white chocolate creates pure magic. It's like getting the best of two worlds in one sweet treat! And it comes together way faster than you'd expect. My little ones enjoy squeezing those limes, and everyone wants to be the one who gets to clean the spoon.
Ingredients List
- Dairy Basics: 2/3 cup evaporated milk (regular, not sweetened)
- For Sweetness: 2 cups granulated sugar
- Just a Bit: 1/4 teaspoon salt
- Soft Stuff: 2 cups mini marshmallows
- The Base: 1 1/2 cups white chocolate chips
- Fresh Flavor: 1/4 cup fresh key lime juice
- Added Pop: 2 teaspoons lime zest
Simple Preparation Steps
- Prep Work
- Put parchment paper in your pan it'll make removing the fudge super easy later on!
- Begin Mixing
- Combine milk, sugar, and salt in your pot. Stir constantly while heating until bubbles form. Continue stirring for 8 more minutes your arm will feel it but the results are amazing!
- Mix In Extras
- Remove from heat and add all remaining ingredients marshmallows, white chocolate, lime juice, and zest. Keep stirring until everything looks smooth and shiny.
- Getting Close
- Transfer to your prepared pan and flatten the surface. Cool at room temperature before putting in the fridge to set completely.
- Enjoy Your Creation
- Slice into squares and serve! Store any leftovers in the fridge if they stick around long enough!
Custom Variations
Regular limes work perfectly fine if key limes aren't available! Sometimes I add a tiny bit of green food coloring for visual appeal, and sprinkling graham cracker bits on top gives that authentic pie experience!
Insider Tricks
Don't ever skip fresh lime zest it's what gives the real flavor punch! Make sure you're always stirring during cooking or you might end up with lumps. In a time crunch? Nellie & Joe's bottled key lime juice works wonders!
Storage Solutions
Store your fudge in a container in the fridge and it'll stay delicious for up to two weeks. Want to save it longer? Wrap it well and freeze it. Just don't forget to place paper between layers so they won't stick together!
Tasty Twists
Add some crushed graham crackers on top for that pie vibe. Love coconut? Toss some in with the mixture! I sometimes pour melted white chocolate over everything for a fancy finish!
Tools For Success
You'll need a decent pot, a good spatula, and a candy thermometer if you have one. Don't forget an 8x8 baking pan and parchment paper they'll make your life so much easier!
Great For Any Occasion
This fudge becomes the star at summer cookouts and holiday parties alike. I love making small batches as gifts everyone goes crazy for that sweet-sour flavor combo!

Frequently Asked Questions
- → Can I swap in regular limes?
Absolutely. Regular limes work great. Just use a bit less juice because they’re usually milder than key limes.
- → What do marshmallows do?
They make a creamier finish and keep sugar crystals from messing up the texture. They also make the fudge firmer.
- → Why is foil used for lining?
Foil makes pulling the fudge out a breeze and ensures tidy squares. Don’t forget to grease the foil to avoid sticking.
- → Is constant stirring that important?
Yup, stirring all the time keeps it from burning and gives it that perfect fudge consistency. It’s worth it.
- → How can I tell it’s done if I don’t have a thermometer?
After boiling for 5-6 minutes, it will get thicker and look darker. Keeping the heat steady will help you time it right.