In a bowl, mix apples with salt and half a lemon. Then, slice thinly and place in a pan. Add butter on medium heat and stir, allowing butter to melt and apples to caramelize.
2. Step
Once caramelized, add apples back to a bowl and add cinnamon, brown sugar, and the juice of the other half of the lemon. Mix gently, then marinate apples for 30 minutes, mixing every 5 minutes.
3. Step
Place a spoonful or two of the apple mixture in a puff pastry sheet and fold/shape as desired. Before placing in the oven, mix egg yolks with milk and brush mixture atop puff pastry sheet, sprinkling with a little white sugar on top as desired.
4. Step
Bake at 360 °C for about 10 minutes, then broil on high heat for 2-3 minutes.
