Melt butter in a large skillet over medium heat. Add eggs and cook until scrambled. Remove to plate.
In the same skillet, add frozen peas and carrots, and minced onion. Saute for 5 minutes or until tender. Add minced garlic and sauté for about 30 seconds.
Add rice and soy sauce to skillet, stirring to combine. Be sure to taste rice with soy sauce, as you may need to increase/decrease amount, depending on your preference.
Cook for 7-10 minutes, stirring occasionally, in order to fry rice.