Preheat oven to 400 F and put the baking sheet in the oven to preheat.
In a large bowl, mix together the baby cereal and milk and allow it to sit for 10 minutes.
Add in the meat, cheese, egg, oregano, pepper, and salt (optional). Mix until combined then roll into 1 tbsp meatballs. Grease the baking sheet. Place on the baking sheet and spritz with a bit more oil in an oil atomizer. Bake for 15 minutes or until it reaches 165 F, flipping once half way through.
Allow to cool slightly before serving to baby, or transfer to a freezer bag for later eating.