Preheat oven to 400°F. For the Mini Apple Pies, mix flour, brown sugar and cinnamon in large bowl. Add apple slices; toss to coat. Divide apple mixture between 4 small (4-inch) baking dishes or ramekins (8-ounce), mounding apples slightly in the center, as needed. Drizzle each with about 1/4 cup of the Salted Caramel. Cut puff pastry sheet into 4 squares. Place one square on top of each pie, tucking in corners as needed. Cut a small ‘x’ in center of each pastry to vent. Brush with egg yolk. Mix granulated sugar and sea salt; sprinkle evenly over top of pies. Place pies on large shallow baking pan.