Add ¾ cup Mini Eggs to a zip-top bag. Crush into small pieces (about the size of chocolate chips) and set aside.
In a large bowl, whip cold heavy cream until stiff peaks form (it should stand up on the whisk). You can use a stand mixer or a handheld mixer for the job. Once whipped, keep the cream in the fridge while you make the rest of the cheesecake filling.
In the same bowl (no need to wash), beat the cream cheese until smooth. Then mix in the sour cream.
Add the sugar and beat until combined.
Pour in the melted white chocolate and give it a quick mix to combine. Then add the vanilla and lemon juice. Mix until smooth.
Grab the whipped cream from the fridge and the crushed Mini Eggs and gently fold them into the cream cheese filling. Do not overmix and do not stir, or else you'll deflate the whipped cream.
Spoon the filling over the crusts, filling each cup slightly above the liner. Tip: Spoon filling around the edges first, then fill the center—this helps avoid gaps.
Smooth the tops and chill in the fridge for at least 4 hours (overnight is best).