Key Lime Bars

Sweet, tart, and simple key lime bars that are a breeze to make!  
Prep Time 15 minutes
Cook Time 15 minutes
Total Time 30 minutes
Servings 16 squares
Author Sam Merritt


Graham Cracker Crust

  • 1 1/2 cups graham cracker crumbs 170g
  • 2 Tablespoons sugar
  • 1 Tablespoon brown sugar tightly packed
  • 6 Tablespoons butter melted, 85g

Key Lime Pie Bar Filling

  • 2 14 oz cans sweetened condensed milk 795g
  • 2/3 cup key lime juice 150ml
  • 1/3 cup sour cream 75g
  • 2 teaspoons lime zest


Graham Cracker Crust

  • Preheat oven to 350F and line a 9x9 baking pan with foil.  Set aside.
  • Combine graham cracker crumbs, sugar, and brown sugar in a large bowl.  
  • Add melted butter and stir well.
  • Press evenly and firmly into the bottom and up the sides of prepared pan.
  • Bake on 350F for 7 minutes.  Allow to cool slightly while you prepare your key lime filling.

Key Lime Filling

  • In a large bowl, whisk together sweetened condensed milk, key lime juice, sour cream, and lemon zest until mixture is smooth.
  • Pour into prepared pie crust and bake for 8-10 minutes, until mixture is set.
  • Remove from oven and allow to cool to room temperature, then transfer to refrigerator and allow to chill 4-6 hours before cutting.
  • Top with whipped cream, if desired, and serve.