Saute onion in olive oil until starting to brown. Add cooked rice and carrots and saute until rice is a little crispy.
Mix soy sauce and Sherry in small bowl. Sprinkle in a little garlic powder. Pour over rice. Mix well and saute until rice begins to crisp.
Mix in frozen peas and continue to saute. When peas are heated through, make a well in center of rice and pour in beaten egg. Stir with a fork until cooked througn, then distribute the egg through the rice. Serve hot, garnished with sliced green onion tops.