Step 1: Prepare Your Ingredients - Gather and measure all ingredients. Dice the onion and set it aside.
Step 2: Sauté the Aromatics - In a large skillet or wok, melt the butter over medium heat. Add the diced onion and sauté for 2-3 minutes until translucent. Add minced garlic and stir for another minute.
Step 3: Add the Vegetables - Toss in the frozen mixed vegetables and cook for 4-5 minutes until heated through and tender.
Step 4: Incorporate the Rice - Add prepared white rice to the skillet, breaking up clumps and combining with the vegetables.
Step 5: Season the Dish - Drizzle sesame oil and pour in soy sauce. Mix well and season with black pepper to taste.
Step 6: Scramble the Eggs - Push rice mixture to one side of the skillet. In the empty space, crack the eggs and scramble until fully cooked, then mix into the rice.
Step 7: Final Touches - Stir everything together, taste, and adjust seasoning if necessary.
Step 8: Serve Hot - Serve the fried rice hot, garnished with green onions or sesame seeds if desired.