Lemon Sour Cream Pie from Brittany:
1 cup white sugar
1/2 cup all-purpose flour
1/2 tsp salt
2 cups milk
1/2 cup sour cream
3 egg yolks
1/4 cup butter
1 1/2 tsp lemon zest
1/4 cup lemon juice
1 (9 inch) pie crust, baked
In a saucepan, combine sugar flour and salt. Gradually stir in milk. Cook and stir on medium heat until thickened and bubbly. Reduce heat, and cook and stir 2 more minutes. Remove from heat. Beat yolks slightly. Gradually stir 1 cup of mix into yolks. Return yolk mixture to saucepan, and bring to gentle boil. Cook and stir 2 more minutes. Remove from heat, and stir in butter, zest and juice. Fold in sour cream. Pour filling into baked pie shell and cool. Top with whipped cream.
*via allrecipes.com