Vegan Key Lime Pie | Easy, Gluten-Free Recipe - Elavegan (2024)

FAQs

What makes key lime pie thicken? ›

Combining the lime juice with the egg yolks and condensed milk creates a chemical reaction that causes the mixture to thicken all on its own (the acid causes the proteins in the yolks and milk to bond together).

The biggest culprit of a runny key lime pie is not letting it chill for long enough. Since this is one of those summer pie recipes that's not baked, chilling the pie helps it set and prevents it from being runny. Be sure to chill it for at least 12 hours!

Similar to coconut cream pie and lemon meringue pie, key lime pie can be made with a graham cracker/cookie crust or a traditional pie crust. I always opt for a graham cracker crust because it's quick to prepare. Plus, why fuss with finicky pie dough when a graham cracker crust tastes so good?

The filling is made similarly to a Magic Lemon cream pie, by simply mixing the ingredients without cooking: the proteins of the egg yolks and condensed milk and the acidic lime juice curdle, thickening the mixture without baking.

The best way to thicken runny apple pie filling before baking it is to add some cornstarch, tapioca starch, or flour to your mix. To fix a runny pie that's already been baked, simply let it cool to see if it will congeal naturally. If not, you can stick it back in the oven for a bit longer.

People expected their authentic Key lime pies to be green, matching the bright green lime color of the Persian limes they saw in their grocery stores. Key lime pie filling, however, takes its yellow color from the egg yolks used in its production.

You may substitute the key lime juice with a mixture of 1/4 cup fresh lemon juice and 1/4 cup fresh lime juice.

Persian limes are more acidic than Key limes and thus often have a more tart flavor. Key limes, which are known for being particularly aromatic, are typically sweeter in taste, making them a perfect ingredient for the refreshing pie they're most known for (or for these fun Key lime pie-inspired s'mores).

Alternatively, perhaps you can get genuine Key limes but find them too tart and bitter. That's also fine. Simply replace a couple of tablespoons with lemon juice instead.

The sweet and tart pie reportedly originated in Key West, Florida, in the late 19th century. The use of sweetened condensed milk, an essential ingredient, is probably because fresh milk and refrigeration were uncommon in the isolated Florida Keys until the 1930s.

What is a fun fact about Key lime pie? ›

In the 1800's a ship salvager named William Curry, Florida's first self-made millionaire had a cook known as Aunt Sally. Historians believe that Aunt Sally did not create the pie but instead perfected the pie created by area fishermen. William Curry has a mansion in Key West that is still standing today.

“Key lime juice has no color.” The genuine pie gets its yellow color, she added, from the egg yolks that are used in it. Key lime pie has long had a place in Key West lore.

If your Key lime pie has been sitting out on the counter for over two hours (or for over an hour in 90 degrees F temperatures), throw it away to eliminate the possibility of foodborne illness, per guidance on food safety from the USDA.

However, the dessert wasn't created in the Sunshine State, but by the Borden condensed milk company in New York City. Thanks to a wave of advertising by the condensed milk company, the recipe for Magic Lemon Cream Pie most likely made its way to Florida sometime in the 1930s and '40s.

Tapioca as Pie Filling Thickener

This old-school ingredient may be what your great grandmother used to thicken her pies, and it's still great for making a perfect fruit pie with a clear, stable filling. Tapioca is derived from cassava (also known as yuca or manioc), a starchy root native to South America.

We like tapioca in blueberry, cherry or peach pies. Arrowroot, unlike cornstarch, is not broken down by the acid in the fruit you are using so it is a good choice for fruit with a higher content of acidity such as strawberries or blackberries.

Here's the thing to remember: If you're filling hasn't set, it means the bottom of the pie crust isn't fully cooked, either. You can prevent the outer crust from further darkening (or even burning) by covering it with aluminum foil or -- more attractively -- with what's known as a pie ring or shield.