Beef with onion

2 lbs beef stew meat , large chunks or 3 lbs pot roast kosher salt , to taste pepper , to taste 3 tablespoons canola oil or 3 tablespoons olive oil 2 -3[...]

2 tablespoons olive oil, divided 1 (1-pound) boneless chuck roast, trimmed 1/2 teaspoon kosher salt, divided 1/2 teaspoon black pepper, divided 1 medium[...]