Sweet Potato Cheesecake

1 pound sweet potatoes

8 tablespoons (4 ounces) butter, melted

3/4 cup all-purpose flour

1/2 cup packed light brown sugar

1 large egg

1 teaspoon vanilla extract

3/4 teaspoon salt

1/2 teaspoon baking powder

1 package (8 ounces) cream cheese, softened

1/3 cup granulated sugar

1 large egg yolk

Preheat oven to 350 degrees F.

Coat 8-inch square baking pan with nonstick spray.

Line pan with parchment paper or aluminum foil,

allowing it to extend above the sides of pan. Spray again. Set aside.
Pierce sweet-potato skins; microwave on high until tender, about 3 to
5 minutes; cool.

Into medium bowl, scoop sweet potato from skins. With electric beater,
beat until smooth, gradually adding butter. Add flour, brown sugar,
egg, vanilla, salt and baking powder. Beat until smooth.
In a small bowl, beat together until smooth cream cheese, granulated
sugar and egg yolk.

Spread half the cream cheese mixture into prepared pan; top with half
the cream cheese mixture in 8 mounds on top. Repeat remaining sweet
potato and cream cheese mixtures. Pull knife through batters to
marbelize. Bake until a toothpick inserted in the center comes out
clean, about 40 to 45 minutes. Cool to room temperature.

Remove from pan by lifting edges of parchment or foil paper; cut into
16 squares. Serve with raspberry sauce if desired.