1 lb. ricotta cheese
1 lb. cream cheese
4 eggs
1 1/2 c. sugar
3 tbsp. lemon juice
3 tbsp. cornstarch
3 tbsp. flour
3 tsp. vanilla
1/2 lb. melted butter
1 pt. sour cream

Cream the ricotta cheese and cream cheese together. Add each ingredient one at a time and beat well after each addition. Add sour cream last and mix well. Make sure all ingredients are at room temperature. Pour mixture into a springform pan. Bake at 375 degrees for 45 minutes. Leave in turned off oven for 1 additional hour.