This is an old recipe I have had since the 1980s.
1 9-inch unbaked pastry shell
1 cup hot mashed yams (sweet potatoes)
1/2 cup butter, softened
1/2 cup firmly packed brown sugar
2 tbsp flour
1 jar (15-oz) apple butter
1/2 cup milk
1 1/2 tsp grated orange rind
1/4 tsp salt
Whipped cream for garnish, optional
Pecan or walnut halves for garnish, optional
Preheat oven to 400 degrees.
In a large mixer bowl, beat the yams, butter, sugar, and flour until well blended. Add the apple butter, milk, orange rind, salt and eggs, beating well until eggs are blended in.
Pour mixture into the pastry shell and bake at 400 degrees for 10 minutes. Reduce temperature to 350 degrees and bake another 50 minutes or until a butter knife inserted in the center comes out clean.
Remove from oven and place on a wire rack to cool.
To serve, garnish each piece with the whipped cream and a nut half, if desired.