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4.8 from 18 votes

Key Lime Pie Bars

These creamy, tart, and perfectly sweet Key Lime Pie Bars are like a slice of paradise and couldn't be any easier to make!

Prep Time
10 mins
Cook Time
10 mins
Cool Time
1 hr
Total Time
1 hr 45 mins
Servings: 15 bars, 1 square per person
Calories: 373 kcal
Course: Dessert
Cuisine: American

Ingredients

Crust Ingredients
  • 15 ritz crackers* $0.55
  • 9 sheets of Graham crackers (1 package)** $0.74
  • 4 Tbsp unsalted butter $0.49
  • 3 Tbsp brown sugar $0.09
Filling Ingredients
  • 2 Tbsp cornstarch $0.10
  • 2 Tbsp cold water $0.00
  • 1 lime, zest + juice*** $0.25
  • ¾ cup lime juice $0.49
  • ¼ cup full fat Greek yogurt $1.02
  • 2 14 oz. cans sweetened condensed milk $4.46

Instructions

    Cup of Yum
  1. In a food processor, combine Ritz crackers, graham crackers, unsalted butter, and brown sugar.
  2. Pulse until well-combined, but not too fine!
  3. Press crust evenly into parchment-lined 9x13” baking dish.
  4. Bake crust for 15 minutes at 350°F. Remove from oven and let cool.
  5. Gather cornstarch, cold water, lime juices, lime zest, Greek yogurt, and sweetened condensed milk. Whisk cornstarch and cold water together.****
  6. Whisk all key lime filling ingredients together in a large mixing bowl until smooth.
  7. Pour key lime filling on top of pre-baked crust.
  8. Bake for another 15 minutes at 350°F. Remove from oven, allowing it to cool completely.
  9. Pop it in the fridge for 30 minutes to an hour. Then, slice bars into squares and (optional) serve with a dollop of homemade whipped cream or Cool Whip! Enjoy.

Notes

  • *About one and a half “fresh stacks” of Ritz Crackers
  • **One sheet of graham crackers equals 4 crackers per sheet.
  • ***Nellie and Joe’s key lime juice is my favorite option for this recipe, but regular lime juice works just fine and is more budget-friendly. Regular lime juice is a little sweeter than key lime juice, but I found including the extra 1-2 Tbsp of juice from the fresh lime helped give it a little more tartness!
  • ****Whisking the corn starch and cold water together before whisking all of the ingredients together is preferable to avoid lumps.
  •  

Nutrition Information

Serving 1square Calories 373kcal (19%) Carbohydrates 61g (20%) Protein 7g (14%) Fat 12g (18%) Sodium 319mg (13%) Fiber 1g (4%)

Nutrition Facts

Serving: 15bars, 1 square per person

Amount Per Serving

Calories 373

% Daily Value*

Serving 1square
Calories 373kcal 19%
Carbohydrates 61g 20%
Protein 7g 14%
Fat 12g 18%
Sodium 319mg 13%
Fiber 1g 4%

* Percent Daily Values are based on a 2,000 calorie diet.