Three Cheese Roulade
["1/4 c. butter or margarine", "1/3 c. all-purpose flour", "1 c. hot milk", "6 eggs, separated", "1/3 c. sour cream", "1 Tbsp. finely chopped parsley", "3/4 tsp. salt", "dash of pepper", "1 (7 1/2 oz.) pkg. farmer cheese, softened", "1 (4 oz.) pkg. Boursin or herb and garlic cheese, softened", "2/3 c. shredded Jarlsberg or Swiss cheese", "lettuce for garnish (optional)", "cherry tomatoes for garnish (optional)"]
["Preheat oven to 375\u00b0.", "Grease 15 x 10-inch jelly roll pan. Line with wax paper, grease again; set aside.", "Lightly grease a piece of foil 15 inches long; set aside."]
["butter", "all-purpose", "hot milk", "eggs", "sour cream", "parsley", "salt", "pepper", "farmer cheese", "garlic cheese", "Swiss cheese", "tomatoes"]