Ham And Potato Au Gratin
["3 Tbsp. margarine", "3 Tbsp. all-purpose flour", "1 3/4 c. milk", "2 beaten eggs", "1 1/2 c. shredded Cheddar cheese", "1/4 c. milk", "1 (24 oz.) pkg. frozen shredded hash brown potatoes (8 patties)", "2 small onions, sliced", "2 Tbsp. oil", "12 oz. cooked ham, cut into thin strips", "1/4 c. grated Parmesan cheese", "1/4 tsp. pepper"]
["In a saucepan melt margarine.", "Stir in flour.", "Add 1 3/4 cups milk all at once.", "Cook to make sauce.", "Remove from heat.", "Stir 1 cup of the mixture into the beaten eggs.", "Stir in Cheddar cheese, 1/4 cup milk and pepper.", "Set aside."]
["margarine", "flour", "milk", "eggs", "Cheddar cheese", "milk", "potatoes", "onions", "oil", "ham", "Parmesan cheese", "pepper"]