I found this recipe for citrus mousse online. It's versatile and easy to make, so I've used it many times. In this instance, I happened to have some Oreo cookies (and some "Oreo Fun Sticks", which I purchased because they looked like they would make a great garnish for a dessert) on hand. The sweetness of the Oreo paired nicely with the sourness of the mousse.
2 (12 ounce) containers frozen whipped topping, thawed
1 (14 ounce) can sweetened condensed milk
1/2 cup lemon juice
1/4 cup passion fruit juice
1/4 cup orange juice
Note: You can substitute pretty much any type of juice, just be sure to use the same quantities. I've made this more tropical, more sour or sweet, etc, it's really up to you!
In a large bowl, beat together whipped topping and condensed milk. Gradually beat in juices until evenly blended. Taste and add a little sugar if necessary (depends on which juice you decide to use).
At this point, the mousse is ready to serve, if so desired. You can serve it plain, with berries or other toppings. Or, you can make my version!
1 cup Oreo cookie crumbs
1 package fresh raspberries
1 box Oreo Fun Sticks
Crush Oreos and place several teaspoons (or tablespoons, if you're serving in larger portions) at the bottom of a small dish. Spoon prepared mousse over Oreo crumbs. Garnish with a whole or half Oreo Fun Stick, and a raspberry. Enjoy!