Crunchy Salted Caramel Apple Crumble Bars

INGREDIENTS

For the Shortbread Crust:

1 1/2 cups

all purpose flour

1/2 cup

unsalted butter, room temperature

1/4 cup

granulated sugar

1/8 tsp

salt

egg yolk

1/2 tsp

vanilla extract

For the Apple Filling:

Granny Smith apples, peeled, cored and roughly chopped

caramel squares

2 tbsp

half and half

1/4 tsp

salt

For the Oat Crumble:

1/2 cup

all purpose flour

1/4 cup

packed brown sugar

1 cup

rolled oats

1/4 tsp

salt

1/4 tsp

ground cinnamon

1/2 cup

unsalted butter, melted and cooled