Key Lime Pie
Ingredients
- 300g Digestive Biscuits
- 150g Butter
- 400g Condensed Milk
- 3 Egg Yolks
- 4 Lime
- 300ml Double Cream
- 1 tbls Icing Sugar
Instructions
- Preheat the oven to 160°C (140°C fan). Blitz the digestive biscuits into fine crumbs using a food processor, or place them in a sturdy bag and crush with a rolling pin. Transfer to a bowl, add the melted butter, and mix until evenly combined.
- Press the biscuit mixture firmly into the base and up the sides of a 22 cm loose-based tart tin, compacting it well. Bake for 10 minutes, then remove from the oven and allow to cool completely.
- To make the filling, place the egg yolks in a large bowl and whisk with an electric mixer for about 1 minute until slightly thickened. Add the condensed milk and whisk for about 3 minutes until smooth and creamy. Add the lime zest and juice and whisk again for 2–3 minutes until fully combined.
- Pour the filling into the cooled crust and smooth the surface. Return the pie to the oven and bake for about 15 minutes, until the filling is just set.
- Remove from the oven and allow to cool completely, then refrigerate for at least 3 hours or preferably overnight.
- When ready to serve, carefully remove the pie from the tin and transfer to a serving plate. Whip the double cream with the icing sugar to soft peaks, then dollop or pipe it over the pie. Finish with extra lime zest and serve chilled.
Tips
- Use authentic Key limes if available; they are smaller, more acidic, and have a more floral aroma than Persian limes.
- Whisk the condensed milk and lime juice thoroughly; the acid will naturally thicken the proteins in the milk.
- Bake the crust briefly before adding the filling to ensure it stays crunchy and holds its shape.
Variations
- Meringue Topped: Top with a toasted Swiss meringue instead of whipped cream for a classic southern finish.
- Coconut Crust: Mix shredded coconut into the graham cracker crumbs for a tropical twist.
Storage
Serving Suggestions
- Top with generous dollops of unsweetened whipped cream and thin lime slices.
- Serve chilled on a hot summer afternoon as a refreshing palate cleanser.
Frequently Asked Questions
Can I use regular limes?
Does the filling need to be baked?
Why is my pie yellow, not green?
instructions_source: editorial-classic