Key lime pie bars

Key Lime Bars

Sweet, tart, and simple key lime bars that are a breeze to make!  
Course Dessert
Cuisine American
Keyword dessert bars, key lime
Prep Time 15 minutes
Cook Time 15 minutes
Total Time 30 minutes
Servings 16 squares
Calories 89kcal
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.


Serving: 1bar | Calories: 89kcal | Carbohydrates: 8g | Protein: 1g | Fat: 6g | Saturated Fat: 3g | Cholesterol: 14mg | Sodium: 94mg | Potassium: 21mg | Fiber: 1g | Sugar: 4g | Vitamin A: 161IU | Vitamin C: 1mg | Calcium: 13mg | Iron: 1mg