Key Lime Meringue Pie Tartlets

Key Lime Meringue Pie is a special treat that is deceptively easy to make and perfect Pi Day or any time.  I even serve it for Thanksgiving! Key Lime Meringue Pie is a special treat that is deceptively easy to make and perfect Pi Day or any time.  I even serve it Thanksgiving!

Hooray, it’s Pi Day!  I am always excited because pie is one of my favorite desserts! 

Growing up, pie sometimes seemed intimidating.  Kind of formal.  And scary to make.  Then my mother passed on her recipe for Betty Crocker French Apple Pie.  Pretty soon my family was putting orders for Thanksgiving dessert and I was baking it for charity auctions.   

Okay, now I loved making pie; what else could I make?! 

Key Lime Meringue Pie is a special treat that is deceptively easy to make and perfect Pi Day or any time.  I even serve it Thanksgiving!

Key Lime Meringue Pie

Of all the wonderful pies I’ve made since, the biggest surprise was Key Lime Pie.  You squeeze lime juice, mix with a couple other ingredients and bake (briefly) in a graham cracker crust. So simple, it can even fall into the 5-ingredient recipe category!  Today I’m taking this to the next level—plus decorating for Pi Day–with Key Lime Meringue Pie Tartlets.

I decided to try topping my key lime pie with meringue after playing around with Baked Alaska.  I had so much fun, topping ice cream and cake with meringue, then using my brand-new torch, that I wanted some new ideas.

Key Lime Pie with Meringue Pi

Pi Day Decor

For those new to meringue, it is much easier than you would think.  It comes in three different versions—French, Italian and Swiss, which vary based on when/how they are cooked.  I use a Swiss Meringue here because it is very stable for piping.  In addition, it gets cooked to 160°F which means no one needs to worry about consuming raw egg!

To make the meringue you heat and whisk egg whites (leftover from making the pie) with sugar, vanilla and cream of tartar.  I just place my mixer bowl over a saucepan with a little water in it.  When the mixture reaches 160°F (or when the sugar dissolves if you aren’t worried about the food safety), you beat it right in the bowl it was heated in until light and fluffy, like soft marshmallow.  Then you spoon or pipe onto the pie and brown with a torch.

Pipe meringue

Piping meringue

Now that I’ve tried this version, I don’t know which I like better—key lime meringue pie or plain, but the topping sure gives it a wow factor.  Today I made this recipe as tartlets, in order to get in a Pi Day decorated version.  But the recipe also works perfectly as an 8-inch pie.   

Easy Peasy and versatile.  Happy Pi Day!

Key Lime Meringue Pie is a special treat that is deceptively easy to make and perfect Pi Day or any time.  I even serve it Thanksgiving!

Mmm!

Key Lime Meringue Pie
Serves 9
Key Lime Meringue Pie is a special treat that is deceptively easy to make and perfect Pi Day or any time.  I even serve it Thanksgiving!
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Prep Time
20 min
Total Time
1 hr 30 min
Prep Time
20 min
Total Time
1 hr 30 min
316 calories
51 g
97 g
10 g
7 g
4 g
112 g
139 g
42 g
0 g
6 g
Nutrition Facts
Serving Size
112g
Servings
9
Amount Per Serving
Calories 316
Calories from Fat 88
% Daily Value *
Total Fat 10g
15%
Saturated Fat 4g
20%
Trans Fat 0g
Polyunsaturated Fat 1g
Monounsaturated Fat 5g
Cholesterol 97mg
32%
Sodium 139mg
6%
Total Carbohydrates 51g
17%
Dietary Fiber 0g
2%
Sugars 42g
Protein 7g
Vitamin A
5%
Vitamin C
4%
Calcium
14%
Iron
4%
* Percent Daily Values are based on a 2,000 calorie diet. Your Daily Values may be higher or lower depending on your calorie needs.
Ingredients
  1. 1 8-inch graham cracker crust or 9 ¼-cup capacity graham cracker tartlet crusts or ramekins (see note)
Filling
  1. 1 (14-ounce) can sweetened condensed milk
  2. 4 large egg yolks
  3. 1/2 c fresh lime juice (from key limes or regular limes)
  4. 2 t fine lime zest (no white)
Meringue
  1. 4 egg whites
  2. ½ t cream of tartar (optional)
  3. 2/3 cup sugar
  4. 1/2 t vanilla
Make filling and bake pie
  1. Whisk together condensed milk, egg yolks, juice (add half at a time) and zest until well combined.
  2. Pour filling into crust(s) and bake at 350 F for 15 minutes for full pie, 10 minutes for tartlets. Cool pie completely on rack (filling will set as it cools), then chill (see note).
  3. You can stop here and serve a regular key lime pie. Otherwise...
Top with meringue
  1. In a medium-sized, heatproof mixing bowl, whisk together the egg whites, sugar, vanilla and cream of tartar (optional).
  2. Place the bowl over a small pan with simmering water, making sure the water doesn't touch the bowl.
  3. Whisk the mixture at least until the sugar has fully dissolved. If you want to pasteurize the meringue, keep whisking until the mixture reaches a temperature of 160°F. Take off the heat.
  4. Using a hand held or a stand mixer, beat the warm mixture until the meringue holds a medium peak and has cooled to room temperature.
  5. Fill a piping bag, then pipe on top of a pie or tartlets.
  6. Brown with torch, then serve or refrigerate until needed.
Notes
  1. I used Keebler mini-graham crusts.
  2. You can cool pie in freezer for about 10 minutes before topping with meringue if you are in a hurry
  3. A microplane is the best tool for zesting.
beta
calories
316
fat
10g
protein
7g
carbs
51g
more
Art of Natural Living https://artofnaturalliving.com/
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8 thoughts on “Key Lime Meringue Pie Tartlets

  1. David

    Why on earth did I never think of putting the Pi symbol on my pies?? You are – yet again brilliant! Our key lime pie recipes are pretty much identical… as I am so lucky to live where key limes are easy to find!

    1. Inger Post author

      Interestingly, we didn’t see any key limes for sale in Florida, but when I got home I found a bag at a Hispanic grocer. Not local of course 😉 !

  2. grace

    as a lover of both math and pie, pi day is my jam! these little tartlets are adorable, and while meringue has never been my friend, i couldn’t pass up a bite!

  3. Karen (Back Road Journal)

    Having lived for some years in Key Largo, Florida, I can tell you that I’ve eaten my fair share of key lime pies. You will see many versions but most stories are that it is authentic when made with meringue. When first developed years ago, no one would have thrown away the egg whites. Whether true or not, I do love it with a meringue topping and your little tarts look great.

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