An easy recipe for rice balls is Fried and Stuffed Rice Balls (Arancini di Riso) by Giada De Laurentiis from the Food Network show "Giada at Home." The recipe is published on FoodNetwork.com, and the ingredient list includes cooked rice or risotto, bread crumbs, eggs, and Parmesan and Gorgonzola cheeses.
To start with the filling, combine a precooked risotto or short-grain rice in a bowl with 1/2 cup of Italian-style seasoned bread crumbs, 1/2 cup of finely grated Parmesan cheese, 1/4 cup of finely chopped fresh basil leaves and two beaten eggs. Form the balls by rolling about 2 tablespoons of the mixture into 1 3/4-inch balls using damp hands. Poke a hole in the middle of each ball, and insert a small 1/2-inch piece of Gorgonzola cheese, sealing the hole back up with the rice mixture. Roll the balls in more bread crumbs to create an even coating on the outside.
Pour frying oil into a pan about 1/3 of the distance to the rim of the pan. Heat the oil on medium-high until the temperature reaches 350 degrees Fahrenheit. Fry the rice balls in batches, rotating every few minutes to brown evenly on each side. When fully browned and golden on the outside, remove the balls to a plate with paper towels to absorb the excess oil and serve.