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Key Lime Fudge Bars

All the flavors of a bright and zesty key lime pie, in the form of homemade fudge! This recipe for Key Lime Fudge Bars is seriously citrusy, and so addictive!

Two key lime fudge bars on a square white plate.

In the last year or so I have developed an annoying tendency.

I have become one of those people who is convinced they have a life-threatening illness.

With every headache I convince myself that I have a brain tumor and wonder when my tumor  grows if I will become a major genius like John Travolta did in Phenomenon.

With every ache in my knee I am doing research online on who is the best knee replacement surgeon in my area.  Or really the whole country because no expense can be spared when I am in need of a life changing surgery.

My knuckles have been aching lately and I have convinced myself that I have Rheumatoid Arthritis.  My husband laughed at me and said yeah, you’re 36…sometimes things just start to ache a little.

He doesn’t feed into my paranoia.  Instead of playing along and acting concerned he just tells me to go for a walk and drink a glass of water.  Like fresh air and H2O are gonna solve my problems.  Ridiculous.

Watching Grey’s Anatomy also does not help, because there are some crazy medical situations that arise on that show only fueling my internal self diagnosis arsenal.

So the other day to get my mind off the cutting-edge eyeball transplant surgery that I will most certainly need, I decided to make fudge.

Of the key lime variety.

At least my brain is working.

Top view of three key lime fudge bars on a white square plate.

I will warn you, though.  This stuff is basically crack-fudge.  I’m not kidding.  The chance of you having high blood sugar after making and inevitable eating the entire pan is imminent.  Real talk.

First make a yummy shortbread crust.  Kind of unconventional for fudge, but trust me on this.

A lined baking pan filled with a crumb crust.

Then melt some white chocolate.  I always use a double boiler for white chocolate because I am not a good microwaver.

White chocolate chips in a glass bowl.

While that’s melting, zest a few limes…

Two limes that have had their zest removed.

Then mix your melted chips, sweetened condensed milk and Key Lime juice together. Stir in your zest…

Lime zest is added into a bowl of fudge ingredients.

Now, if you are feeling fancy, reserve 1/4 cup of the white chocolate mix and tint it green to swirl in to the fudge.

Spread the uncolored mixture evenly over the crust and then swirl in the tinted.

Photo collage of the green and white key lime fudge batters being added to the pan and swirled together.

Pop it in the fridge and let it set up for about 2-3 hours.

Cut it up when you’re ready to serve…

Two key lime fudge bars on a square white plate.

Out of control good.  I wouldn’t steer you wrong.

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Two key lime fudge bars on a square white plate.

Key Lime Fudge Bars

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  • Author: Shelly
  • Prep Time: 10 minutes
  • Chilling Time: 2 hours
  • Cook Time: 7 minutes
  • Total Time: 2 hours 17 minutes
  • Yield: 24 pieces 1x
  • Category: Dessert
  • Method: Oven
  • Cuisine: American

Description

All the flavors of a bright and zesty key lime pie, in the form of homemade fudge! This recipe for Key Lime Fudge Bars is seriously citrusy, and so addictive!


Ingredients

Scale
  • 20 shortbread cookies, crushed (about 1 cup)
  • 5 Tbsp salted butter, melted
  • 1/4 cup granulated sugar
  • 3 cups white chocolate chips
  • 1 (14 oz) can sweetened condensed milk
  • 3 Tbsp Key lime juice
  • zest of 4 Key Limes.
  • green food coloring (optional)

Instructions

  1. Preheat oven to 350°
  2. Line an 8×8 pan with foil.
  3. In a medium bowl combine crushed cookies, melted butter and granulated sugar.
  4. Press evenly into prepared pan. Bake for 6-7 minutes until edges start to golden.
  5. In a double boiler melt white chocolate chips. When just melted remove from heat and stir in sweetened condensed milk and Key Lime juice.
  6. Stir in zest.
  7. *Optional, reserve 1/4 cup fudge mixture and with a small amount of green food coloring, tint the reserved mixture and set aside.
  8. Spread the un-colored fudge mixture into prepared pan. Then drizzle reserved mixture on top and swirl in with a knife.
  9. Place in refrigerator to set, 2-3 hours.
  10. Cut into squares.

Notes

This is a soft fudge, and although you don’t have to, I stored my in fridge.
adapted from Sugar Cooking

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55 comments on “Key Lime Fudge Bars”

  1. Karen @ Sugartown Sweets

    Your post has me laughing!! this is SO me..love it! I’m passing your recipe on to my daughter who LOVES key lime and anything with sugar! Thanks for a great recipe! 🙂

  2. I don’t want to feed your anxieties but Rheumatoid arthritis is actually an autoimmune disease that can hit at any age, any time! osteoarthritis is the old people one. And yes, this is why med school is NOT good for my hypochondriacism. NOT.GOOD.

    I need this fudge in my life.

  3. CulinarilyCourtney

    Citrus is quickly becoming one of my favorite ingredients and this looks fabulous (and dangerous haha)! A beautiful candy!

  4. Rachel @ The Avid Appetite

    Love key lime! Never thought to make it into fudge. This makes me think of hot Jersey summers, and picking up key lime pie at the little farmer’s market…warm weather where are you?!

  5. I am so happy to hear I’m not the only one who is a hypochondriac. I have headaches so often that I’m certain I have a brain tumor. (Really it’s just sinus allergies) And every time my knees and hips hurt, I’m certain I will need knee and hip replacements. (Really I’m just not active enough and need to lose a few pounds) I’m glad I’m not alone in this. And this fudge looks absolutely amazing. I WILL be making it this weekend! 🙂

  6. It’s really yummy! I thought I escape my meal because I feel a kind of emptiness when I see this delicious one… This is really delicious and I will try ito have it for my family…

  7. Those look delicious! I love the little green specks from the lime zest and the green tinted swirls. I can’t wait to try these out.

  8. Lol, last night I was positive I was going into septic shock (uhhh, don’t ask) and then that I was having an allergic reaction. Meanwhile, my boyfriend continued to watch Family Guy like nothing was wrong while I was DYING IN HIS BED. It was awful. And then I woke up, saw this post about fudge, and suddenly, life has a silver lining… temporarily, of course, because later I’ll probably have a stroke or contract Restless Leg Syndrome or something.

  9. You would get along well with my husband. Or else you would be dangerous together, because then you would both be dying… this fudge looks amazing!

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