Place a frying pan over medium heat. Lightly spray with oil. Reduce heat to low. Pour half of the egg mixture into the pan. Cook, covered, until set. Roll from one side, and move the roll to the center of the pan. Pour in half of the remaining mixture. Cook again, covered, until set. Roll again and move the roll to the center of the pan. Pour in the rest of the egg mixture. Coo, covered, until set. Roll completely. Remove from heat. Cut into bite-sized pieces and serve.