Skip to Content

Key Lime Fudge

*This post may contain affiliate links. As Amazon Associates we earn from qualifying purchases.

Key Lime Fudge is unlike any other fudge.  It’s sweet, tart, soft, smooth, and so creamy you’ll love to eat it!

A few years ago, John and I took a trip to Key West, and it quickly became my absolute favorite vacation spot.  

While we were visiting the island, we found this neat little novelty shop selling everything key lime.  

The store is Kermit’s Key Lime, and it is the only place I’ve found key lime fudge.

Multiple pieces of key lime fudge stacked on top of each other.

Kermit’s Key Lime Fudge had me hooked after one bite.  It comes in a cute box with a wooden spoon which I found odd at first.  

Then I realized you need the spoon to eat it because the fudge is so soft that it’s nearly impossible to cut into squares.

Every time we visit Key West I find myself at Kermit’s buying a box of key lime fudge with the best intentions of taking it home.

Photograph showing the difference between limes and key limes.

Only it doesn’t make it that far.  It usually gets eaten before we leave the island.

Recreating Kermit’s Key Lime Fudge has been a goal of mine for a while now, but I haven’t been able to find real key lime juice.  

There are a couple of companies that sell it online, but the shipping was as much as a bottle of the juice.

Recently I found a bottle of key lime juice at my local supermarket and bought it without hesitation and got to work.

Photo showing the insides of a regular lime and a key lime.

You may be wondering why I didn’t use regular lime juice. That would have been easier since limes are in practically every grocery store.

If you’ve never tasted a key lime, you don’t know what you’re missing. Key limes are smaller in size, more tart, and have a stronger aroma than Persian limes.

They make the best key lime pies, fudge, key lime cocktails, and key lime aiolis. I higher recommend trying to find a bottle of key lime juice for this recipe. You’ll be happy you did!

Now for the good stuff.

How to Make Key Lime Fudge:

Prepare the Pan:

Place parchment paper in a 9 x 9-inch baking dish and spray the parchment paper with cooking spray.  Set aside.

An aerial view of the chocolate melting in a large pan.

Make the Fudge

Heat the chocolate chips and sweetened condensed milk over low to medium heat stirring constantly. After the mixture melts, remove from the heat and add the lime juice.

The key lime fudge after it's been poured into a pan.

Stir to combine. Carefully pour the fudge into the prepared baking dish.

Chill the Fudge

Place the fudge in the refrigerator for 3 to 4 hours. Just a quick note. Key lime fudge isn’t like our rocky road fudge which sets firm.

This fudge has a softer set due to the white chocolate, kind of like our white chocolate peppermint fudge.

If you need to cut it into squares, let the fudge chill overnight. Place a sharp knife under hot water to warm the blade before cutting.  

Store in an airtight container in the refrigerator for up to 5 days.

Five pieces of fudge lined out on a rectangular plate.

If you like this key lime fudge recipe, please leave us a comment and rate the recipe card. You can also find us on Facebook, Pinterest, Twitter and Instagram searching for Berly’s Kitchen!

Join our Facebook group for more recipes from Berly’s Kitchen, our new site More Than Meat and Potatoes, and some of our blogger friends!

Five pieces of fudge lined out on a rectangular plate.

Key Lime Fudge

Yield: 24 Servings (2 Pieces Each)
Prep Time: 10 minutes
Cook Time: 5 minutes
Setting Time: 4 hours
Total Time: 4 hours 15 minutes

Key Lime Fudge is unlike any other fudge.  It's sweet, tart, soft, smooth, and so creamy you'll love to eat it!


  • 24 ounces white chocolate chips, (4 cups by volume)
  • 14 ounces sweetened condensed milk, (1 can)
  • 10 Tablespoons key lime juice


  1. Prepare a 9 x 9-inch baking dish with parchment paper. Spray parchment paper with cooking spray.
  2. Add white chocolate chips and sweetened condensed milk to a large saucepan, and melt over low-medium heat.
  3. Stir until the mixture begins to melt and combine. The mixture may be thick but will loosen once the key lime juice is added.
  4. Add the key lime juice, and stir to combine. The mixture should be smooth and creamy.
  5. Pour into a prepared baking dish. Place in the refrigerator for 3-4 hours to set.


*See post regarding serving and cutting options.

*Total time includes time for fudge to set.

Recommended Products

As an Amazon Associate and member of other affiliate programs, I earn from qualifying purchases.

Nutrition Information:
Yield: 24 Serving Size: 2 pieces
Amount Per Serving: Calories: 207Total Fat: 10gSaturated Fat: 6gUnsaturated Fat: 0gCholesterol: 11mgSodium: 46mgCarbohydrates: 26gSugar: 25gProtein: 2g

Don't forget to follow us on Pinterest!

Share this recipe by clicking the Pinterest button below!

Subscribe for Twice a Week Newsletters

* indicates required
Email Format

Share to Save The Recipe!

Two gray mugs with coffee.
Coffee with Kahlua
← Read Last Post
Healthier Jalapeno Poppers are filled with soft cream cheese and smoky paprika, cradled in a spicy jalapeno, and tucked beneath a crunchy breadcrumb topping.
Healthier Jalapeno Poppers
Read Next Post →

SuZ Miller

Tuesday 22nd of December 2020

As you said, this tends to be soft -- i decided to turn it into truffles covered in dark or white chocolate -- made balls from the fudge, froze them, then dipped them in the chocolate of choice; yummy!!!!!


Wednesday 23rd of December 2020

Good morning Suz, thank you for reading the post :) Freezing the fudge and making it into truffles was an awesome idea! Also, thank you for coming back to let us know how the recipe turned out for you. Have a lovely day :)


Monday 7th of December 2020

So good!! It didn't set up so I guess I am not sharing and just using a spoon!


Tuesday 8th of December 2020

Good Morning Terrenia, we're glad you enjoyed the fudge. Yep, it's a soft-set fudge, we talked about that in post. Our recipe was inspired by fudge from Kermit's Key West Key Lime Shoppe in Key West, Fl (man that's a mouthful). Even the fudge they make and sell is so soft you have to eat it with a spoon. But, it's so good you don't want to share it any way lol! Thank you for dropping by and commenting on the recipe. Kim and I hope you have a lovely day :)


Wednesday 15th of May 2019

Strange that I can get key limes, but not bottled juice locally. So the recipe says 10 tablespoons juice, which is little over half a cup? I'm guessing a pound of limes might do it? Or maybe make life easier on myself and I'll get a bottle of juice on amazon.


Thursday 16th of May 2019

Good morning Cat! Hm, a pound might do it, but it would depend on how much juice you can get from each lime. If it were up to me, I would buy 2 pounds just to be safe. However, that's up to you. I will say using the bottled stuff is a lot easier and it holds longer in the fridge. Thank you for commenting. Have a lovely day :)