Q1: Do I really have to use Key limes? What is the difference?

For a pie to be called an "authentic" Key Lime Pie, it must be made with Key limes. Key limes are smaller and have a more intense, aromatic, and floral flavor than the larger, more common Persian limes. Their juice is also less acidic. If you substitute regular lime juice, you will have a delicious "lime pie," but it will not have the signature flavor of a true Key Lime Pie.

Q2: Is it okay to use bottled Key lime juice?

Yes, absolutely! Bottled Key lime juice is a fantastic, high-quality, and convenient option that is widely used, even by professional bakers. It saves you the very tedious task of juicing dozens of tiny Key limes and delivers a consistent, authentic flavor every time.

Q3: How do I know when my Key Lime Pie is done baking?

This pie bakes for a very short time. You are not looking for it to be completely solid. The two signs of doneness are: the surface will have a few tiny, pinhole-sized bubbles that have burst, and the center of the pie will still be wobbly (like Jell-O) when you gently nudge the pan. It will firm up completely as it chills in the refrigerator.

Q4: Why did my Key Lime Pie not set up properly?

The number one reason for a runny Key Lime Pie is not chilling it long enough. The pie must be thoroughly cold to become firm enough to slice cleanly. Chilling for at least 3-4 hours, or even overnight, is highly recommended for the best results. Also, ensure you are using the correct amounts of sweetened condensed milk and lime juice, as their chemical reaction is key to the setting process.

Q5: Is this a "no-bake" Key Lime Pie?

This is a "baked" Key Lime Pie, although the baking time is very short (5-8 minutes). The short bake time helps to set the custard filling safely and properly. Traditional, authentic Key Lime Pie is always baked. Some "no-bake" versions exist, but they often rely on gelatin or more whipped topping to set and have a different texture.

The Best Authentic & Easy Key Lime Pie Recipe

A quick and easy recipe for a classic Key Lime Pie. The tangy and creamy filling is made by simply mixing sweetened condensed milk with key lime juice, sour cream, and fresh lime zest. This mixture is poured into a pre-made 9-inch graham cracker crust and baked for just a few minutes to set the filling. The pie is then thoroughly chilled before being served, often garnished with whipped cream and lime slices.

Author: Evelyn
Prep Time: 10 minutes
Cook Time: 7 minutes
Total Time: 1 hour 17 minutes (includes chilling time)
Yield: 8 servings 1x
Category: Dessert
Method: Baking, Chilling
Cuisine: American
Diet: Vegetarian

Ingredients

Scale

3 cups sweetened condensed milk
¾ cup key lime juice
½ cup sour cream
1 tablespoon grated lime zest
1 (9 inch) prepared graham cracker crust
Whipped cream and lime slices, for garnish (optional)

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Instructions

Preheat the oven to 350°F (175°C).
In a large bowl, combine the sweetened condensed milk, key lime juice, sour cream, and lime zest. Mix well until all ingredients are thoroughly combined.
Pour the filling mixture into the prepared graham cracker crust.
Place the pie on a baking sheet for stability.
Bake in the preheated oven for 5 to 8 minutes. The pie is done when tiny pinhole bubbles begin to burst on the surface. The filling will still be wobbly.
Transfer the pie to a wire rack to cool to room temperature.
Thoroughly chill the pie in the refrigerator for at least 1 hour before serving.
Garnish with whipped cream and lime slices, if desired.

Notes

This recipe uses a pre-made graham cracker crust for convenience and speed.
Baking the pie briefly helps to set the filling. The visual cue for doneness is when small bubbles start to burst on the surface.
Chilling the pie for at least an hour is a crucial step to ensure the filling is firm enough to slice and serve cleanly.

Nutrition

Serving Size: 1 slice (1/8 of pie)
Calories: 600-700
Sugar: 80-100 g
Sodium: 250-350 mg
Fat: 25-35 g
Saturated Fat: 15-20 g
Carbohydrates: 90-110 g
Fiber: 1-2 g
Protein: 12-15 g
Cholesterol: 80-100 mg

Find it online: https://cookupjoy.com/key-lime-pie-2/