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5 from 6 votes

Key Lime Bars

A classic key lime bar with a buttery graham cracker crust and filling made with only 3 ingredients!
Prep Time20 mins
Cook Time25 mins
Total Time45 mins
Course: Dessert
Cuisine: American, dessert
Servings: 12 bars
Calories: 198kcal



  • 1 package of graham crackers 9 sheets
  • 6 tablespoons (85 g) unsalted butter melted
  • 1/4 cup (50g ) granulated sugar


  • 4 large egg yolks
  • 14- ounce can of sweetened condensed milk
  • 1/2 cup (120 mL) lime juice (or use key lime juice)
  • 2 teaspoons lime zest (about 1-2 limes)


  • Preheat your oven to 350°F. Line a 9x9 baking pan with aluminum foil and spray with a cooking spray.
  • In a food processor, place your graham cracker sheets and pulse until finely ground. Empty the graham cracker crumbs into a mixing bowl, add in your melted butter and sugar. Stir to combine. Press the graham cracker crumb mixture into the 9x9 pan and press down into an even layer. Bake in the preheated oven for 10 minutes.
  • In a second mixing bowl, combine the filling ingredients. Whisk to combine. Pour over the graham cracker crust and bake for an additional 15 minutes until set. Allow the bars to cool on a cooling rack before slicing. Bars can be refrigerated for up to 2 days, the crust may soften slightly however.


  • Storage: Yes you can make these up to two days ahead of time. Just cover and store in the fridge. The crust may soften slightly, however. 


Calories: 198kcal | Carbohydrates: 24g | Protein: 4g | Fat: 10g | Saturated Fat: 6g | Trans Fat: 1g | Cholesterol: 88mg | Sodium: 53mg | Potassium: 145mg | Fiber: 1g | Sugar: 23g | Vitamin A: 350IU | Vitamin C: 4mg | Calcium: 105mg | Iron: 1mg