Crush 1.5 cups graham cracker crumbs. Mix with 5 tablespoons melted butter, 2 tablespoons sugar, and a pinch of salt. Press into 9-inch pie pan. Bake at 350°F for 8-10 minutes until golden. Cool slightly.
Pro tip: Use measuring cup bottom to press evenly.
Step 2: Make Filling
Separate 4 egg yolks. Mix with 1 can (14 oz) sweetened condensed milk, ½ cup key lime juice, and 1 tablespoon lime zest. Stir until smooth and creamy.
Pro tip: Taste filling and adjust sweetness with more juice or condensed milk if needed.
Step 3: Combine & Bake
Pour filling into cooled crust. Bake at 350°F for exactly 15 minutes. Center should jiggle slightly when shaken. Don't overbake.
Pro tip: Use instant thermometer if available. Center should read 150-160°F for creamy texture.
Step 4: Cool & Chill
Cool to room temperature (30 minutes). Cover with plastic wrap. Refrigerate minimum 2-4 hours (overnight is better). Pie firms up and flavors meld during chilling.
Pro tip: Pie actually tastes better on day 2-3 than fresh.
Step 5: Serve
Top with fresh whipped cream right before serving. Garnish with lime zest or thin lime slice if desired.
Pro tip: Don't add whipped cream hours ahead—it gets soggy.