Lime Citrus Fudge

Featured in Sweet Treats and Baked Favorites.

Mix sugar, milk, and salt over heat, then add lime zest, juice, marshmallows, and chocolate until silky. Let it chill before slicing into citrusy bites.

Aisha
Updated on Mon, 24 Mar 2025 02:16:15 GMT
Creamy lime fudge squares stacked and surrounded by lime halves with a sprinkle of zest. Pin it
Creamy lime fudge squares stacked and surrounded by lime halves with a sprinkle of zest. | cookingflavor.com

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!

A stack of lime-flavored fudge pieces sits on parchment paper next to halved limes. Pin it
A stack of lime-flavored fudge pieces sits on parchment paper next to halved limes. | cookingflavor.com

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.

Lime Citrus Fudge

Velvety fudge packed with white chocolate and key lime zing. A fun balance of tart and sweet for a perfect little treat.

Prep Time
15 Minutes
Cook Time
8 Minutes
Total Time
23 Minutes
By: Aicha

Category: Desserts

Difficulty: Intermediate

Cuisine: American

Yield: 36 Servings (36 squares)

Dietary: Vegetarian, Gluten-Free

Ingredients

01 1/2 teaspoon of salt.
02 1 2/3 cups of sugar—granulated works best.
03 5 oz can of evaporated milk (make sure it's 2%).
04 12 marshmallows, cut into quarters.
05 2 cups of white chocolate chips.
06 About 1/4 cup of lime zest (from roughly 5 limes).
07 2 tablespoons of juice from 5-7 key limes.

Instructions

Step 01

Cover an 8-inch pan with foil, then lightly coat the foil with butter.

Step 02

In a sturdy saucepan, heat salt, sugar, and milk over medium flame until it boils.

Step 03

Turn heat to medium-low, and while stirring frequently, let it simmer for about 5-6 minutes.

Step 04

Take off the heat. Mix in marshmallows, white chocolate, lime zest, and lime juice until blended and smooth.

Step 05

Spread the mixture smoothly into the pan. Let it cool off completely.

Step 06

Slice it into squares that are about 1-inch in size.

Notes

  1. You can swap key limes for regular ones.
  2. An 8-inch pan works better than a 9-inch pan for this.
  3. A double boiler isn't a must, but it can make things easier.

Tools You'll Need

  • A double boiler or a durable saucepan.
  • An 8-inch square pan.

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Contains dairy.

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 100
  • Total Fat: 3 g
  • Total Carbohydrate: 17 g
  • Protein: ~