A Sweet-Tart Treat That Tastes Like Summer in Every Bite!
If you’re a fan of that zesty, citrusy kick that only key lime can deliver, get ready — this Key Lime Fudge is a creamy, dreamy slice of sunshine. It’s rich and silky like traditional fudge but with a bright, refreshing twist that makes it totally irresistible. The tangy lime flavor cuts through the sweetness just enough to keep you coming back for “just one more piece” (trust me, it happens).
Perfect for gifting, parties, or treating yourself to a little homemade luxury, this fudge is super simple to make — no candy thermometer, no fancy tools, just sweet satisfaction in under 30 minutes of prep.
Why You’ll Love Key Lime Fudge
This recipe isn’t just about the ingredients—it’s about creating moments. Whether you’re whipping it up for a holiday tray, a bake sale, or a little personal indulgence, this fudge fits the bill. Here’s why it’s a favorite:
Versatile: Great for summer gatherings, spring holidays, or as a refreshing twist on classic fudge year-round.
Budget-Friendly: Made with a handful of easy-to-find ingredients that won’t break the bank.
Quick and Easy: Comes together with minimal effort — just melt, mix, pour, and chill.
Customizable: Add a graham cracker crust base for a “pie” vibe or top with white chocolate drizzle for flair.
Crowd-Pleasing: Sweet, tart, creamy — everyone who tries it wants the recipe.

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Ingredients in Key Lime Fudge
Here’s what gives this fudge its signature flavor and melt-in-your-mouth texture:
White Chocolate Chips
The smooth, sweet base that pairs perfectly with citrus.
Sweetened Condensed Milk
Gives the fudge its classic creamy richness.
Key Lime Juice
Fresh or bottled — adds that zingy, unmistakable tartness.
Key Lime Zest
For an extra punch of lime flavor and gorgeous green flecks.
Butter
Adds richness and helps the fudge set just right.
Optional: Graham Cracker Crumbs
For a fun nod to key lime pie if you want to layer or sprinkle.
(Note: the full ingredients list, including measurements, is provided in the recipe card directly below.)
Instructions
Let’s dive into the steps to create this flavorful masterpiece:
Prepare Your Pan
Line an 8×8-inch baking dish with parchment paper or foil for easy removal.
Melt the Base
In a saucepan over low heat, combine white chocolate chips, sweetened condensed milk, and butter. Stir until smooth and melted.
Add the Lime
Remove from heat and stir in key lime juice and zest until fully incorporated and the mixture thickens slightly.
Pour and Smooth
Pour the fudge into your prepared dish and smooth the top with a spatula.
Chill to Set
Refrigerate for at least 3–4 hours or until firm.
Slice and Enjoy
Lift from the pan, cut into squares, and get ready to fall in love!
Nutrition Facts
Servings: [Number of servings]
Calories per serving: [Calorie count per serving]
Preparation Time
Prep Time: [Time to prepare ingredients]
Chill Time: [Time to chill and set]
Total Time: [Total time needed]
How to Serve Key Lime Fudge
Here’s how to turn this treat into a showstopper:
- With Whipped Cream: Add a small dollop for extra richness.
- As Part of a Dessert Tray: Pair with chocolate or peanut butter fudge for variety.
- Topped with Zest or Crumbs: Sprinkle lime zest or crushed graham crackers for visual appeal.
- In Mini Gift Boxes: Wrap up for a thoughtful, homemade edible gift.
Additional Tips
- Use Real Key Limes if Available: They give a more authentic flavor, but bottled juice works in a pinch.
- Don’t Skip the Zest: It really amps up the citrusy flavor.
- Use Low Heat: High heat can scorch the chocolate — go slow and steady.
- Cut Cleanly: Use a warm knife for neat squares.
- Store Properly: Keep in an airtight container in the fridge for best texture.
FAQ Section
Q1: Can I use regular lime juice instead of key lime?
A1: Yes! Regular lime juice works well if key limes aren’t available.
Q2: How long does key lime fudge last?
A2: Store in the fridge for up to 1 week or freeze for up to 2 months.
Q3: Can I make this dairy-free?
A3: You can try using dairy-free condensed milk and vegan white chocolate.
Q4: Can I add food coloring?
A4: Sure! A drop of green food coloring gives it a pretty pastel tint.
Q5: Is this fudge very sweet?
A5: It’s sweet, but the lime balances it beautifully with a tangy bite.
Q6: Can I double the batch?
A6: Absolutely — use a 9×13-inch pan for a larger batch.
Q7: Can I add a crust?
A7: Yes! Press crushed graham crackers with butter into the bottom of the pan before pouring the fudge mixture over it.
Q8: What if my fudge doesn’t set?
A8: Make sure you chill it thoroughly — overnight is best. Also, measure ingredients carefully to ensure the right texture.
Q9: Can I use white chocolate bark instead of chips?
A9: Yes, just chop it into small pieces to melt evenly.
Q10: Can I serve it at room temp?
A10: Yes, but it’s best slightly chilled to maintain a firm texture.
Conclusion
Bright, creamy, and perfectly sweet-tart, this Key Lime Fudge is like a slice of summer you can hold in your hand. It’s an easy, irresistible treat that’s sure to be a hit with citrus lovers and fudge fans alike. Whip it up, chill it down, and share a little sunshine — one square at a time!
Print
Key Lime Fudge
- Total Time: 3 hours 20 minutes (including chilling)
- Yield: 36 small squares 1x
- Diet: Vegetarian
Description
Key Lime Fudge is a smooth, creamy white chocolate fudge infused with fresh key lime flavor and zest — a tangy, tropical twist on a classic treat.
Ingredients
- 3 cups white chocolate chips
- 1 (14 oz) can sweetened condensed milk
- 2 tablespoons unsalted butter
- 2 teaspoons key lime zest
- 1/4 cup key lime juice (fresh or bottled)
- 1/2 teaspoon vanilla extract
- Pinch of salt
- Optional: green food coloring (1-2 drops for a light tint)
Instructions
- Line an 8×8-inch square baking dish with parchment paper, leaving an overhang on the sides.
- In a saucepan over medium-low heat, combine white chocolate chips, sweetened condensed milk, and butter. Stir constantly until melted and smooth.
- Remove from heat and stir in key lime zest, juice, vanilla extract, salt, and food coloring (if using).
- Quickly pour mixture into the prepared dish and smooth the top with a spatula.
- Chill in the refrigerator for at least 3 hours or until set.
- Lift the fudge out using the parchment, cut into squares, and serve.
Notes
- Use fresh key lime juice for the best flavor, but bottled key lime juice works well too.
- For added texture, top with crushed graham crackers before chilling.
- Store in an airtight container in the refrigerator for up to 1 week.
- Prep Time: 10 minutes
- Cook Time: 10 minutes
- Category: Dessert
- Method: No-Bake
- Cuisine: American
Nutrition
- Serving Size: 1 piece
- Calories: 130
- Sugar: 16g
- Sodium: 30mg
- Fat: 6g
- Saturated Fat: 4g
- Unsaturated Fat: 2g
- Trans Fat: 0g
- Carbohydrates: 18g
- Fiber: 0g
- Protein: 1g
- Cholesterol: 5mg