Amish Hamburger Steak Bake with Creamy Mushroom Sauce - cookrisp

Ingredients

• 1 1/2 lbs ground beef
• 1/2 cup breadcrumbs
• 1 large egg
• 1 tsp garlic powder
• 1 tsp onion powder
• Salt and pepper, to taste
• 1 (10 oz) can cream of mushroom soup
• 1/2 cup milk
• 1 small onion, thinly sliced
• 1 cup mushrooms, sliced (optional)
• 1 tbsp Worcestershire sauce
• Fresh parsley, chopped (optional)