Step 1

Mix together sugar, lemon juice, corn starch, flour and whipping cream, and bring to a boil. Let boil for one minute while stirring constantly.

Step 2

Remove from heat and add in butter. Stirring to mix well.

Step 3

Cool to room temperature, then stir in Sour cream and put into pie shell.

Step 4

Let set in refrigerator until ready to be served. Optional: Garnish with whipped cream and warm raspberry sauce.