Tater Twopie Pie Recipe

Ingredients

1 1/4 cups all-purpose flour

1 1/2 teaspoons salt

1 1/4 cups packed brown sugar

3 tablespoons butter

2 eggs

1 cup sour cream

1/2 cup milk

1/2 cup white sugar

1 onion, chopped

1 16 ounce prepared and cooled sponge cake liner

1 2/3 cup buttermilk