Separate the eggs. Put the yolks into the small bowl, whisk and set aside.
Put sugar into a microwave safe bowl. Add cream and stir sugar gently.
Heat in the microwave for 2 minutes to dissolve the sugar. Stir gently till sugar is disolved.
Add vanilla and a pinch of salt, mix. Mix in the egg yolks well.
Heat in the microwave in 30 second increments, mixing well each time, until the mixture thickens. It took me about 3 minutes total.
Cut tops off peaches, and carefully hollow them out, discarding pit. Slice a thin portion from bottoms, if needed, to help peaches sit upright. Fill each peach to the top with the custard. Bake for about 30 minutes. ool and refrigerate until ready to serve, up to 3 hours.
Sprinkle some sugar on top of each peach and caramelize sugar using a kitchen torch. Serve.