Key Lime Pie Ice Cream Sandwiches (Printable)

Velvety key lime ice cream sandwiched by crisp graham cracker cookies for a bright, cool summer treat.

# What You'll Need:

→ Key Lime Ice Cream

01 - 1 cup sweetened condensed milk
02 - 1 1/2 cups heavy cream, cold
03 - 1/2 cup full-fat Greek yogurt
04 - 1/3 cup fresh key lime juice
05 - 1 tablespoon key lime zest
06 - 1 teaspoon pure vanilla extract
07 - Pinch of salt

→ Graham Cracker Cookies

08 - 1 1/2 cups graham cracker crumbs
09 - 1/2 cup all-purpose flour
10 - 1/2 teaspoon baking powder
11 - 1/4 teaspoon salt
12 - 1/3 cup unsalted butter, room temperature
13 - 1/3 cup brown sugar, packed
14 - 1 large egg
15 - 1/2 teaspoon vanilla extract

# How to Make It:

01 - In a large mixing bowl, whisk together sweetened condensed milk, Greek yogurt, key lime juice, lime zest, vanilla extract, and a pinch of salt until smooth.
02 - In a chilled bowl, whip the cold heavy cream to stiff peaks. Gently fold the whipped cream into the lime mixture until evenly incorporated and smooth.
03 - Line a 9x9-inch pan with parchment paper. Pour in the key lime ice cream mixture, smooth the surface, and freeze for at least 4 hours or until fully set.
04 - Preheat the oven to 350°F. Line a baking sheet with parchment paper.
05 - In a medium bowl, combine graham cracker crumbs, all-purpose flour, baking powder, and salt.
06 - In a separate large bowl, beat the unsalted butter and brown sugar together until light and fluffy. Beat in the egg and vanilla extract until well blended.
07 - Gradually stir the dry ingredients into the butter mixture, mixing just until a dough forms. Avoid over-mixing.
08 - Scoop 16 tablespoon-sized balls of dough onto the prepared baking sheet. Gently flatten each. Bake for 8 to 10 minutes until golden brown. Cool cookies on a wire rack.
09 - Once frozen, remove ice cream from the pan. Using a round cookie cutter matching the cookie size, cut out 8 discs of ice cream.
10 - Place one ice cream disc between two graham cracker cookies, pressing gently to adhere. Serve immediately or wrap sandwiches and store in the freezer until ready to enjoy.

# Expert Suggestions:

01 -
  • There’s a secret burst of tartness from extra lime zest that will make your mouth pucker and smile at the same time.
  • The homemade graham cracker cookies are so good, you’ll want to snack on them solo.
02 -
  • If you rush the freezing step, the ice cream will squish right out when you bite—patience, not shortcuts.
  • Switching to regular limes in a pinch works, but you’ll notice a subtle difference in brightness.
03 -
  • Lining your ice cream pan with parchment paper will save you every time—it’s the difference between clean rounds or kitchen frustration.
  • Take a moment to zest the limes right over the bowl, so every spray of oil lands in the mix for unbeatable flavor.