Key Lime Birthday Pie with Brown Sugar Pretzel Crust

I gave Jason a choice for his belated birthday dessert—Key lime cheesecake with Patron sauce or Key lime pie. He chose Key lie pie, but specified he wanted one with pretzel crust.

Key lime pie

Heck if I’ve ever written down my recipe so it always takes me a while to figure out how to make it again. And then I worry that it’s not as good as last time.When it was done, I put the pie in the refrigerator and texted Jason that it would be ready to eat when he and Camden got back to our house that night. The next morning I noticed that there were only two pieces gone. Worried that the pie didn’t turn out, I questioned Jason like a cop busting up an underage party. The interrogation was unwarranted though, as he assured me they liked the pie but it was too sweet to eat huge slices at midnight.

Key lime pie

Crisis averted. So that I have the recipe for his next February birthday, here’s the recipe for our favorite Key lime pie—best savored one slice at a time.

For a lighter dessert perfect for Easter Sunday, make summer breeze lime pie from Midwest Living.

Sweet and tart birthday wishes,


Key Lime Pie

Staci at Random Sweets
There's no better combo than sweet, salty and tart.
5 from 1 vote
Prep Time 15 minutes
Cook Time 37 minutes
Course Dessert
Cuisine American
Servings 8
Calories 523 kcal



  • cups pretzel crumbs, approximately 4 cups pretzels
  • ½ cup brown sugar, firmly packed
  • 1 teaspoon ground cinnamon
  • ½ cup unsalted butter, melted


  • 28 oz sweetened condensed milk, 2 (14oz) cans
  • 6 egg yolks, large
  • ½ cup Key lime juice
  • 2 teaspoons pure vanilla extract
  • 1 tablespoon Key lime zest, or lime zest
  • whipped cream for topping, optional



  • Heat oven to 350°F.
  • Combine pretzel crumbs, brown sugar, and cinnamon in a food processor. Add butter and pulse until combined. (Or mix crust ingredients in a bowl.)
  • Lightly spray 9-inch pie plate. Drop the crust mix into the pan and firmly pat down evenly with the bottom of a measuring cup or the palm of your hand.
  • Bake crust 7 minutes. Remove from oven. Turn oven down to 325°F.
  • In the bowl of an electric stand mixer, pour in the sweetened condensed milk, egg yolks, Key lime juice, and vanilla extract. Beat on medium-high until mixed well.
  • Stir in lime zest. Pour filling into crust.
  • Bake at 325°F for 30 minutes or just until set.
  • Cool to room temperature. Refrigerate for at least 3 hours before serving. Keep leftovers in refrigerator up to 4 days.


Calories: 523kcalCarbohydrates: 70gProtein: 10gFat: 24gSaturated Fat: 14gPolyunsaturated Fat: 1gMonounsaturated Fat: 7gTrans Fat: 0.5gCholesterol: 210mgSodium: 138mgPotassium: 426mgFiber: 0.2gSugar: 68gVitamin A: 823IUVitamin C: 7mgCalcium: 319mgIron: 1mg
Keyword Key lime, pie filling, pretzels

All text and images © Staci Mergenthal • Random Sweets

Tried this recipe?Mention @RandomSweets and tag #OurSweetMidwestLife

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