Gratin Parmentier

Ingredients

• 5 Tbs butter
• 4 Tbs flour
• 2 cups water
• 2 cups milk
• 1 1/2 tsp salt
• 1/2 tsp nutmeg
• 6 potatoes
• 1 onion
• 1-2 lbs ground beef
• 1 tsp parsley
• 1/4 tsp paprika
• 2 cups shredded cheese