These mini Key lime pies are cute, custardy, citrusy delights!
SMASH: Add graham cracker pieces to large zipper-lock plastic bag. Seal bag, making sure to press out all air. Use rolling pin to gently pound bag to break crackers into crumbs.
MIX: Add graham cracker crumbs and butter to small bowl. Heat in microwave until toasted, about 1 minute. Stir with rubber spatula to combine.
SOFTEN: In large bowl, microwave cream cheese for 10 to 15 seconds. Whisk softened cream cheese until very smooth.
WHISK: Add condensed milk, lime zest and juice, water, egg yolk, and salt to bowl with cream cheese. Whisk until well combined and smooth.