烤乳酪蛋糕（海绵蛋糕底）Homemade Baked Cheese Cake (Sponge Cake Base)

Ingredients:
Base:
    1 no        Egg
  50 gm       Butter, melted
  50 gm       Castor Sugar
  50 gm       Plain Flour
 1/2 tsp       Baking Powder

Filling:
 450 gm       Philadelphia Cheese Block
    4  nos      Egg, Separate it
 225 gm       Caster Sugar
  40 gm       Plain Flour
    1 no        Lemon Juice
300 ml        Sour Cream

Topping:
   1 tsp        Gelatin
   5 tsp        Hot water

Method:

Base:
1)  Grease a 20 cm round sponge release tin
2)  Sift plain flour & baking powder in a big bowl.
3)  Add in sugar, butter & egg mix well.
4)  Beat for 2 to 3 minutes.
5)  Spread the sponge mixture evenly over the bottom of the prepared tin.
6)  Bake at preheat oven at 170 C for 20 minutes or till golden brown.

Filling:
  1)  Separate the egg yolk & egg white.
  2)  In a large mixing bowl, beat the egg yolk with sugar till thick & creamy.
  3)  Add in cream cheese beat lightly till smooth.
  4)  Stir in plain flour, follow by lemon juice & sour cream.
  5)  In a separate bowl beat egg white till stiff and fold into the cheese mixture.
  6)  Pour the cheese mixture into the sponge cake.
  7)  Wrap aluminium foil over the cake tin.
  8)  Place the cake tin into a tray with filled with water at 1" level.
  9)  Bake in preheat oven at 149 C for 1 hour or till firm.
10)  Off Oven & let it stand in oven for an hour.

Topping:
1)  Melt the gelatin in the hot water
2)  Use brush to apply a thin layer of gelatin mixture on top of the cheese cake.