In a bowl, whisk together soy sauce, Worcestershire sauce, olive oil, balsamic vinegar, garlic, and rosemary.
Place the chuck steaks in a resealable bag or shallow dish and pour the marinade over them.
Let them marinate for at least 30 minutes, or up to 24 hours for more flavor.
Heat a cast-iron skillet over medium-high heat.
Add 1 tablespoon of olive oil and let it get hot.
If you didn’t marinate the steaks, season both sides with salt, pepper, garlic powder, and onion powder.
Place the steaks in the hot pan and sear for 3-4 minutes per side, until a nice crust forms.
If the steaks are still tough after searing, transfer the skillet to a preheated 375°F oven and cook for 5-10 minutes until tender.
Remove the steaks from the heat and let them rest for 5 minutes before slicing.
Slice against the grain and serve with your favorite sides.