Scramble the eggs in a small pan over medium heat, creating small bits of egg.
In large bowl, carefully toss peas, grated carrot, scrambled egg, diced onion and cooled rice together.
Melt margarine in a large frying pan over medium-high heat. Dump the bowl of rice/vegetables/egg into the pan, then add the soy sauce. Cook for 6-8 minutes, stirring often. Salt and pepper to taste.
As a variation, may sauté bite size chicken (or pork or beef) pieces first, then proceed with recipe and add meat to frying pan with rice mixture to create a meal.