Pat the round steak dry
Season both sides with salt and pepper
Tenderize the steak with a meat mallet if desired
Heat a skillet over medium-high heat
Add a small amount of oil to the skillet
Sear the steak for 2 to 4 minutes per side
Reduce the heat to medium-low
Add sliced onions, garlic, or broth if desired
Cover and cook until the steak reaches desired doneness
Use a meat thermometer to check internal temperature
Remove the steak from the heat
Let the steak rest for 5 to 10 minutes
Slice the steak thinly against the grain
Serve immediately