Chai Spice Cookie Bars

INGREDIENTS

1/2 cup

unsalted butter (softened)

2/3 cup

granulated sugar

1/4 cup

light brown sugar

large egg

large egg yolk

1 tsp

pure vanilla extract

2 tbsp

sour cream or plain yogurt

1 1/2 cups

Bob's Red Mill White All-Purpose Flour

1/2 tsp

baking soda

1/4 tsp

salt

4 tsp

chai spice mix (see note)

1/2 cup

unsalted butter (softened)

3 cups

powdered sugar

2 tbsp

half and half or cream

1/2 tsp

pure vanilla extract

2 tsp

chai spice mix (see note)

1 tbsp

granulated sugar or coarse sugar

1/2 tsp

chai spice mix (see note)