Whisk together the egg yolks, 4 tbsp of sugar and a pinch of salt.
Add whipping cream and vanilla and whisk until well blended.
Divide the mixture evenly between 5-6 (6oz) ramekins. I filled each ramekin about 3/4 full. Cover each tightly with foil.
Gently place in air fryer basket and air fry at 370 °F for 32 minutes.
Check after the first minute to ensure none of the tinfoil flew off. Resecure or use tinfoil wrapped all the way around the ramekin.
Use potholders or tongs to carefully remove hot ramekins and set on a rack to cool.
Once completely cooled, cover with plastic wrap and chill for a minimum of 1 hour or up to 2 days.
When ready to serve, top each ramekin with 1 teaspoon sugar and then either use a kitchen torch to caramelize the sugar or broil for 2-3 minutes in your oven.
Let stand for a few mins before serving.
Notes
If using a hand or stand mixer, use the lower settings. It’s ok for some bubbles to get in the egg mixture, but let the bubbles settle for a few minutes prior to baking.