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1
Preheat oven to 350 degrees F (175 degrees C).
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2
Mix the chocolate wafer cookie crumbs with 2 tablespoons of the white sugar, and the melted butter.
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3
Press firmly into the bottom and 1/2 inch up the sides of one 9 inch springform pan.
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4
Bake at 350 degrees F (175 degrees C) for about 8 minutes.
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5
To Make Cookie Dough: In a bowl beat 1/4 cup butter or margarine with the brown sugar and 1/4 cup of the white sugar.
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6
Stir in the water and 1 teaspoon of the vanilla.
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7
Beat in the flour and the semisweet chocolate chips.
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8
Stir until combined.
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9
To Make Cheesecake: In a food processor or with a mixer beat 1 cup of the white sugar, and all the cream cheese.
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10
Add 1 cup of the sour cream, the eggs, and 1 teaspoon of the vanilla.
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11
Mix well and pour into prepared crust.
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12
Drop cookie dough in 2 tablespoon portions evenly over the top of the cake, pushing dough beneath the surface.
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13
Bake at 350 degrees F (175 degrees C) for about 40 minutes.
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14
Cake will jiggle slightly in center.
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15
Spread topping over hot cake.
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16
Let cake cool than chill in a refrigerator until cold, at least 4 hours.
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17
To Make Topping: Mix the remaining 1 cup sour cream, 1 teaspoon vanilla, and the 2 teaspoons white sugar until smooth.
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18
Spread over hot cake.
