Cheese Cake

Directions

1. 1
   Blend together Ricotta and cream cheese.
2. 2
   Add sugar, mix well. Add one egg at a time, beating well after each addition on high speed.
3. 3
   Reduce speed to medium, slowly add cornstarch, lemon juice, vanilla and butter.
4. 4
   Mix well.
5. 5
   Add sour cream, mix well. Pour into greased and dusted with graham cracker crumbs spring-form pan. Bake 1 hour at 325°.
6. 6
   Turn oven off and let sit in oven for 2 hours until cool.
7. 7
   Refrigerate at least 6 hours before serving.