INGREDIENTS
1
batch of 15-minute puff pastry (recipe u][HERE [/u])
2 cups
diced apples (from about 3 small apples)
1 tsp
ground cinnamon
1 tbsp
freshly squeezed lemon juice
1/4 cup
light brown sugar
1 tbsp
unsalted butter
salt
1
large egg yolk, beaten
coarse sugar for sprinkling (optional)