Add the ricotta to a clean towel and squeeze out as much liquid as you can. Set aside.
Preheat oven to 400°F/200°C.
Brush the bottom of a large cast iron skillet with olive oil.
To a mixing bowl add the ricotta, pork, egg, Parmesan, sage, fennel, nutmeg, salt and pepper.
Use a fork and mix well until all the ingredients are well combined. Don't over mix.
Use an ice cream scoop form into 1-ounce balls (1/4 cup) and place them evenly spaced in the skillet. Brush with olive oil and bake for 18-20 minutes until golden brown.