Salisbury Steak

Ingredients

• 1 1/2 pounds lean ground beef
• 1/2 cup seasoned breadcrumbs
• 1 tablespoon ketchup
• 2 teaspoons dry mustard
• 4 dashes Worcestershire sauce
• 1 cube beef bouillon, crumbled (or powdered beef base)
• Salt and pepper
• 1 tablespoon butter
• 1 tablespoon olive oil
• 1 whole onion, halved and thinly sliced (or diced if you prefer)
• 2 cups beef broth, more if needed for thinning
• 1 tablespoon ketchup
• 1 teaspoon seasoning sauce, such as Kitchen Bouquet, optional
• 4 dashes Worcestershire
• 1 teaspoon cornstarch, optional
• Salt and pepper