Butter a round cake pan and coat it with granulated sugar.

Wash the nectarines. Cut them into thick wedges and spread them evenly in the bottom of the pan.

Using a stand mixer or hand mixer, blend the eggs, mascarpone, and milk. Add the flour, honey, baking soda, and thyme. Mix until smooth.

Pour the batter over the nectarines in the pan.

Bake for 45 minutes in a preheated oven at 350°F (180°C).