Herb-Marinated Chuck Steak

Ingredients

• 1 pound beef chuck shoulder steak -- boneless, cut into 1-inch pieces
• 1/4 cup minced onion
• 2 tablespoons chopped fresh parsley
• 2 tablespoons white vinegar
• 1 tablespoon vegetable oil
• 2 teaspoons Dijon-style mustard
• 1 clove garlic -- crushed
• 1/2 teaspoon dried thyme leaves -- crushed