Step 1

Slice beef into thin strips.

Step 2

Season with salt, garlic powder and fresh pepper to taste.

Step 3

Heat a large skillet over high heat.

Step 4

When the skillet is very hot, spray with cooking spray and add half of the beef.

Step 5

Cook one minute, then turn steak and cook an additional 30 seconds.

Step 6

Set aside in a large dish.

Step 7

Spray the skillet again and when it gets hot add the remaining steak, cooking one minute, then turning and cooking 30 seconds more.

Step 8

Add remaining steak to the dish.

Step 9

Return skillet to heat and spray once again with cooking spray; add onions and season with salt and pepper.

Step 10

Cook one minute, then turn and cook onions an additional 30 seconds or until onions are golden.

Step 11

Lower heat to medium and add 1/2 tsp olive oil to the skillet, add mushrooms, salt and pepper and lightly spray the top of the mushrooms with cooking spray.

Step 12

Cook 1 1/2 minutes, then turn mushrooms and cook another minute and a half.

Step 13

Add to dish with steak and onions and stir to combine.

Step 14

Serve over rice.