Defrost mushrooms or cut fresh mushrooms
Pour oil into the bottom of the pan
Dice the onions into small pieces and place in oil
Add salt and pepper to taste and stir occasionally (about a teaspoon of salt and ½ teaspoon of black pepper)
After about 5-10 minutes on a low to medium flame add mushrooms and the minced garlic
Continue cooking until the vegetable mix is sautéed and the onions are translucent
Place the vegetables into a mixing bowl, and put them aside
Cook rice per instructions
When the rice is about 3/4 of the way cooked, add the vegetables to the pot
Taste rice and add additional salt and pepper as needed