A no-bake lime icebox cake with María cookies and condensed milk is a refreshing Mexican classic. This family-favorite dessert is a tangy, creamy, easy-to-make summer treat.
In a mixing bowl, combine the sweetened condensed milk, evaporated milk, fresh lime juice, lime zest, vanilla extract, and salt. Whisk together until completely smooth and thickened.
Set up an 8-inch square dish or similar pan. Arrange a single layer of María cookies on the bottom, trimming cookies as needed to cover the entire base.
Pour a third of the lime-milk mixture over the cookies, spreading evenly. Use a spatula to smooth out to the edges for even soaking.
Repeat layering two more times: add another cookie layer, top with more cream, and gently tap the pan to remove air bubbles and ensure the cookies are evenly covered.
After the final cream layer, cover the dish tightly with plastic wrap, and refrigerate for at least 4 hours (preferably overnight) for the cookies to soften fully.
Just before serving, optionally garnish with extra lime zest. Slice and serve chilled for the best creamy texture.