Cheesecake - cooking recipe

Ingredients

1 lb. Ricotta cheese
1 lb. cream cheese
1 1/2 c. sugar
6 eggs
6 Tbsp. flour
2 tsp. vanilla
1 pt. sour cream
butter

Preparation

Beat in order given.
Grease a 9-inch spring-form pan with butter.
Bake at 350\u00b0 for 1 hour.
Shut off oven and let stand for 1 more hour.
Remove from oven and let cool completely before removing from pan.