Black and White Cookie Ice Cream Sandwiches.

INGREDIENTS

2/3 cup

buttermilk

2 tsp

vanilla

2/3 cup

(about 11 tablespoons) unsalted butter, softened

1 cup

granulated sugar

large eggs

2 1/2 cups

all-purpose flour

1 tsp

baking soda

1 tsp

salt

1 pint

vanilla bean ice cream

pink dark chocolate ice cream

icing

3 cups

powdered sugar

2 tbsp

light corn syrup

2 tsp

freshly squeezed lemon juice

1 tsp

vanilla extract

to 4 tablespoons water, plus more for chocolate frosting

1 3/10 cups

unsweetened dutch process/dark cocoa powder