Line a muffin pan with 12 liners. Prepare the crust. Mix the crumbs and sugar together.
1 cup (90 grams) graham crackers crumbs, 4 teaspoons granulated sugar
Stir in the melted butter. Spoon 1 packed tablespoon of the mixture onto the bottom of each muffin liner and press it down to form the crust. Place in the refrigerator while you prepare the filling.
3 tablespoons (42 grams) unsalted butter
To prepare the filling, beat the cream cheese with an electric hand mixer at medium speed until fluffy.
12 ounces (338 grams) cream cheese
Beat in the melted white chocolate and once well combined, stir in the Greek yogurt. Gently stir in one package of raspberries (make sure they are very well patted dry).
1 1/2 cups (225 grams) white chocolate chips, 6 tablespoons (90 grams) plain Greek yogurt, 1 1/2 packages (6 ounces each) raspberries
Remove the crusts from the refrigerator. They should now be firm - if they're still soft and crumbly, refrigerate them until firm.
Spoon 1/4 cup of filling into each cup. Place in the freezer for at least 2-4 hours. This will make removing the wrappers easier and they'll come out looking neater.
Remove from the freezer and remove the wrappers. If they're still soft, you can serve immediately. If you've frozen them for 6+ hours, they're likely totally hard. In that case, let sit at room temperature for at about 20-30 minutes before serving or let thaw for about an hour in the refrigerator.
Decorate with remaining raspberries before serving.