Preheat the oven to 350°F (177°C). Line a 12-count muffin pan with liners and a second 12-count muffin pan with only 4 (since this recipe makes only around 16). Set pans aside.

Before you begin, here are all of my tips for a perfect graham cracker crust. If you’re starting out with full-sheet graham crackers, you can use a food processor or blender to grind them up. Or crush them in a zipped top bag with a rolling pin. Mix the graham cracker crumbs, melted butter, and granulated sugar together with a silicone spatula in a medium bowl until combined. The mixture will be thick, coarse, and sandy. Press a heaping Tablespoon of mixture down into each liner, making sure the crust is tight and compact. You might have a little crust leftover. If so, press a little more into each liner—if desired! Pre-bake the crusts for 5 minutes. Remove from the oven.

In a large bowl using a handheld or stand mixer fitted with a whisk attachment, beat the cream cheese on high speed until smooth, about 1 minute. On medium-high speed, beat in the egg yolks, scraping down the sides as needed. On high speed, beat in the sweetened condensed milk and lime juice until combined.

Pour the filling evenly into each crust. Bake for 15–16 minutes or until the centers of the pies only slightly jiggle (I check this by wiggling the muffin pan—with an oven mitt on!—while it’s still in the oven). Allow the pies to cool at room temperature in the pan set on a wire rack. Once completely cool, place the pan in the refrigerator for at least 2 hours and up to 1 day.

Once chilled, serve the key lime pies cold with whipped cream and a lime slice if desired. Store leftover pies in the refrigerator (covered) for up to 1 week. If they last that long!