You can make the lemon mousse in advance and assemble the dessert when serving. If there are leftovers, keep them covered in the refrigerator. It freezes very well, too.
Keyword creamy lemon filling, crushed oreos, easy party dessert, gluten-free quick desserts, individual serving, layered desserts, lemon cream dessert, lemon cream with oreos, lemon mousse, Lemon Mousse with Oreos (easy glass dessert), mini glass dessert, no bake lemon dessert, no bake recipe, oreo mini dessert, quick desserts