Salted Caramel Chocolate Hazelnut Bars

Ingredients

• 2 cups flour
• 1 cup butter, cold, diced
• 1/2 cup powdered sugar
• 2 tbsp cornstarch
• pinch salt
• 12 oz hazelnut pieces, toasted
• 2 cups semi-sweet chocolate chips
• 1 cup butter
• 2 cups brown sugar
• 1 tsp salt
• 1 cup heavy cream
• 1 tbsp vanilla extract