In a large skillet or wok, heat the sesame oil and canola oil over medium-high heat until shimmering.
Add the diced onion to the skillet and sauté for about 2-3 minutes until translucent. Then, incorporate the minced garlic and stir for an additional 30 seconds until fragrant.
Next, toss in the frozen peas and carrots. Stir-fry for about 3-4 minutes, allowing them to cook through and become tender.
Push the vegetable mixture to one side of the skillet and pour the whisked eggs into the other side. Scramble the eggs until fully cooked, then mix them into the vegetable mixture.
Add the cooked cold white rice to the skillet. Break apart any clumps and stir everything together, ensuring the rice is well mixed with the vegetables and eggs.
Fold in the cubed and cooked steak. Make sure to distribute the steak evenly throughout the rice for balanced bites.
Pour the soy sauce over the rice mixture. Stir well to combine, allowing the soy sauce to coat all the ingredients evenly. Cook for an additional 2-3 minutes, letting everything heat through.
Remove the skillet from heat and serve your Steak Fried Rice hot, garnished with sliced green onions if desired.