Pat the tri-tip steak dry
Trim excess fat if needed
Season generously with salt and black pepper
Add garlic powder, onion powder, or your preferred rub if desired
Let the steak sit at room temperature for 30 to 60 minutes
Preheat the oven to 425°F or prepare a grill for medium-high heat
Sear the tri-tip in a hot skillet or on the grill for 4 to 5 minutes per side
Reduce heat or move to indirect heat
Cook until the internal temperature reaches 130°F for medium-rare or 135°F for medium
Remove the steak from heat
Rest the steak for 10 to 15 minutes
Slice the tri-tip against the grain
Serve immediately