Preheat oven to 400℉. Spray or grease a standard muffin tray with oil. Or skip the step and use a silicone muffin tray.
In a large bowl, whisk together the eggs, oil and ricotta cheese until smooth. Mix in the tapioca flour and salt. Lastly fold in the cheeses. Scoop the batter into the muffin tray filling 3/4 full.
Bake for 20-25 minutes or until puffed and golden brown. Allow to set in the pan for 5 minutes then transfer to cooling rack.
Notes
You can use tapioca flour, corn starch or arrowroot powder.