1-Step One: Prepare Your Equipment Preheat your oven to 350°F. This temperature allows the crust to set without burning and gives the filling enough heat to set properly without cracking. Line a standard 12-count muffin pan with paper liners. Standard-size muffin cups make pies about 2.5 inches across, which is the perfect size for individual servings. Avoid mini muffin pans, as they create pies that are too small and have an unbalanced crust-to-filling ratio.

2-Step Two: Mix and Press the Crust In a medium bowl, combine the graham cracker crumbs, melted butter, and granulated sugar. Stir until the mixture resembles wet sand and holds together when squeezed. The butter should evenly coat all the crumbs for proper binding. Press a heaping tablespoon of the crust mixture firmly into each liner. Use the bottom of a small glass or the back of a measuring spoon to create an even, compact base. The crust should be firmly packed but not so compressed that it becomes rock-hard after chilling. You may have extra crust mixture, which you can use to create thicker bases or make additional mini pies in a second batch.

3-Step Three: Pre-bake the Crusts Place the muffin pan in the preheated oven and bake the crusts for 5 minutes. This pre-baking step is crucial because it helps set the crust structure before adding the wet filling. Without this step, the crust might become soggy from the moisture in the filling. Remove the pan from the oven and set it aside while you prepare the filling. There’s no need to let the crusts cool completely before adding the filling.

4-Step Four: Prepare the Creamy Filling In a large bowl or the bowl of a stand mixer, beat the softened cream cheese until completely smooth. This usually takes 1-2 minutes on medium speed. Any lumps remaining at this stage will be visible in the final product, so take your time with this step. Add the egg yolks and mix until fully combined. The mixture should be uniform in color with no streaks of egg yolk visible. Scrape down the sides of the bowl as needed to ensure even mixing. Pour in the sweetened condensed milk and key lime juice. Mix on low speed until everything is fully blended and the mixture is smooth. Avoid overmixing at this stage, as incorporating too much air can cause the filling to puff up and then crack during baking.

5-Step Five: Fill and Bake Using a ladle or measuring cup with a spout, pour the filling evenly over each pre-baked crust. Fill each liner about 3/4 full to allow a small amount of room for the filling to expand slightly during baking. Dividing the filling evenly among the 16 cups (you’ll likely need to bake in two batches or use two muffin pans) ensures consistent baking. Bake for 15-16 minutes at 350°F. The Mini Key Lime Pies are done when the edges are set but the centers still have a slight jiggle, similar to gelatin. They will continue to set as they cool. If the centers are completely firm when you remove them, they may be slightly overbaked.

6-Step Six: Cool and Chill Let the pies cool in the muffin pan on a wire rack for about 10-15 minutes. This prevents the hot filling from sloshing around as you move them. After this initial cooling, you can carefully transfer them to the refrigerator. Chill the pies in the refrigerator for at least 2 hours, though overnight chilling produces the best texture. The filling needs this time to fully set and develop its creamy consistency. You can make them up to 1 day ahead of serving.

7-Step Seven: Serve and Enjoy Once thoroughly chilled, your Mini Key Lime Pies are ready to serve. Peel off the paper liners and transfer each pie to a serving plate. Top with a dollop of whipped cream and a thin slice of fresh lime if desired. The garnish adds a lovely presentation touch for dinner parties or special occasions. Serve these mini pies cold for the best texture and flavor. The contrast between the crisp graham cracker crust and the creamy, tangy filling is what makes this dessert so memorable.