Heat 1 tablespoon of oil in a large skillet or wok over medium-high heat.
Add the chopped onion and cook for 2–3 minutes until softened.
Stir in the peas and carrots and cook for another 2 minutes.
Push the vegetables to one side of the skillet and pour the beaten eggs onto the other side.
Scramble the eggs until fully cooked, then mix them with the vegetables.
Add the remaining tablespoon of oil and the cold rice.
Stir-fry everything together, breaking up any clumps of rice.
Pour in the soy sauce, toss to coat evenly, and season with salt and pepper.
Stir in the green onions and cook for 1 more minute.
Serve hot and enjoy!