Salisbury Steak Casserole

Ingredients

• 1 can French Onion soup, divided
• 1 can cream of mushroom soup
• 1/2 packet dry onion soup mix
• 1/4 cup all purpose flour
• 1/4 cup ketchup
• 2 tbsp Worcestershire sauce
• 1 tsp mustard powder
• 1/2 tsp onion powder
• 1/2 tsp garlic powder
• 1 1/2 lb lean ground beef
• 3 cups mashed potatoes
• 1 can French cut green beans, drained
• salt and pepper to taste