Cheesecake - cooking recipe

Ingredients

1 lb. Ricotta cheese
1 lb. cream cheese
1 pt. sour cream
4 eggs
1 tsp. vanilla
3 Tbsp. cornstarch
3 Tbsp. flour
1 1/2 c. sugar
1/4 lb. butter

Preparation

Cream the cheese well, until light and fluffy.
Add sour cream; beat well.
Add eggs, one at a time; beat.
Add vanilla, cornstarch and flour; mix well.
Add sugar and melted butter; bake in a greased spring pan in a 350\u00b0oven.
After 1 hour, shut off oven and leave in the oven for 1 hour more.