Susie's Lip Smacking Key Lime Pie (With Citrus-Zested Crust!)

Susie's Lip Smacking Key Lime Pie

If you’ve ever had a Key Lime Pie that was either way too sweet or texturally flat, this recipe is here to change your mind. It strikes the ideal balance between rich, velvety creaminess and sharp, vibrant citrus.

Most traditional recipes rely strictly on condensed milk and juice, which can sometimes skew overly sweet. By folding full-fat sour cream into the filling, you introduce a slight tang that rounds out the flavor profile while creating a smooth, velvety setting.

Another game-changer is the crust. Pre-made, store-bought crusts simply don't compare to a homemade version. By combining freshly crushed graham crackers with real melted butter, you get a warm, nutty base. Taking it one step further by pressing fresh lime zest directly into the crumb mixture releases essential oils during baking, infusing citrus aroma from the base all the way to the top.

Ingredients

Graham Cracker Crust

  1 sleeve graham crackers, finely crushed into crumbs(I used my ninja food processor here). 

  2 tbsp granulated sugar

  6 tbsp butter, melted

  Zest of 1 lime (optional, but highly recommended)

Key Lime Filling

  28 oz (2 cans) sweetened condensed milk

  1/2 cup full-fat sour cream

  1 cup Key lime juice (bottled or freshly squeezed)

  Zest of 2 regular limes (or 4 Key limes)

Instructions

1. Prepare the Crust

In a medium bowl, combine the graham cracker crumbs, granulated sugar, melted butter, and lime zest. Mix until the crumbs are uniformly coated and resemble wet sand. Press the mixture firmly and evenly into the bottom and up the sides of an 8" to 9.5" pie dish.

2. Mix the Filling & Bake

Preheat your oven to 325°F (163°C). In a separate bowl, whisk together the sweetened condensed milk, sour cream, Key lime juice, and lime zest until smooth and fully integrated. Pour the filling directly into the prepared crust. Bake for 10 minutes—just long enough for the filling to set around the edges while remaining soft in the center.

3. Cool & Chill

Remove the pie from the oven and allow it to cool at room temperature for about 60 minutes. Transfer to the refrigerator and chill for a minimum of 2 hours before slicing to allow the filling to set completely.

Pro Tip: Top each slice with a dollop of fresh whipped cream and a slice of Key lime for a striking, restaurant-quality presentation!