Chef John's Cheesecake Flan
I used four 5 1/2-ounce ramekins, and had a little custard mixture left over, so you can probably get 5 out of this recipe if you use slightly smaller ramekins, or fill them with less batter.
Ramekins can also be greased with melted butter.
Nutrition data for this recipe includes the full amount of custard. The actual amount consumed will vary.