Apple Crisp Cookie Bars

INGREDIENTS

For the bars

1 1/2 cups

all-purpose flour

1/2 tsp

baking powder

1/4 tsp

baking soda

1/4 tsp

fine salt

1 tsp

ground cinnamon

1 stick

unsalted butter

1 cup

dark brown sugar

2 tbsp

molasses

1 tbsp

milk

large egg plus 1 egg yolk

1 tsp

vanilla extract

For the apple mixture

small Granny smith apples, peeled, cored, and cut into 1/4-inch slices

2 tbsp

granulated sugar

2 tbsp

cream

1 tsp

ground cinnamon

For the oat topping

1/3 cup

all-purpose flour

1/3 cup

old-fashioned rolled oats

1/4 cup

light brown sugar

2 tbsp

granulated sugar

1/4 tsp

salt

3 tbsp

unsalted butter, cubed and chilled