Beef Stroganoff

Name: Beef Stroganoff
Prep time: 20 min
Cook time: 30 min
Total time: 50 min
Cuisine: American, Eastern European
Ingredients: 1 ½ pounds sirloin steak (or ribeye); 3 tablespoons all-purpose flour (divided); ½ teaspoon seasoned salt; ½ teaspoon black pepper; 2 tablespoons olive oil; 2 tablespoons salted butter; 1 small onion (diced); 8 ounces mushrooms (sliced, white or cremini); 1 clove garlic (minced); 14.5 ounces beef broth; 2 teaspoons Worcestershire sauce; ½ tablespoon Dijon mustard; ½ teaspoon dried thyme leaves; ½ cup sour cream; egg noodles (pasta, or mashed potatoes for serving)