Mix 7/8 cup sugar with 3 tablespoons corn starch. Add to 1 pound and 14 ounces cream cheese and mix. Add 1 extra large egg and blend. Then add 1/2 cup heavy cream a little at a time and mix. Then add 3/4 teaspoons vanilla and mix.

Add ingredients to well greased 7-inch pan with sponge cake on bottom of pan. Bake at 450 degrees for approximately 40 to 45 minutes until top is golden brown. Cool for about 3 hours. To simplify removal from cake pan, allow to fully cool overnight if possible, then reheat in 200 degree oven for 1 or 2 minutes, turn cake upside down and the cake will just slide out.