Tender Salisbury Steak with Mushroom Gravy - Chef Melt

Ingredients

• 1 egg.
• 1/2 cup panko or 1/3 cup regular breadcrumbs.
• 1 lb/500g ground beef.
• 1/2 tsp Worcestershire sauce.
• 1 beef bouillon cube, crushed.
• 3 tsp dijon mustard or 2 tsp mustard powder.
• 2 tbsp ketchup.
• 1 garlic clove, finely minced.
• 1/2 onion (use white, yellow, or brown).
• 1 tbsp olive oil.
• 1/2 finely chopped onion.
• 5 oz/150g mushrooms, cut into slices.
• 2 cloves garlic, minced.
• 30g or 2 tbsp unsalted butter.
• 3 tbsp plain flour.
• 2 cups reduced-sodium beef broth.
• 1/2 cup water.
• 2 tsp Dijon mustard.
• 2 tsp Worcestershire sauce.