01 -
Preheat oven to 110°C and line two baking sheets with parchment paper.
02 -
Combine cinnamon, granulated sugar, brown sugar, and sea salt in a large bowl.
03 -
Add apple slices to the bowl and gently toss with lemon juice to prevent browning.
04 -
Drizzle melted butter over apple slices, then sprinkle cinnamon-sugar mixture ensuring each slice is well coated.
05 -
Place apple slices in a single layer on prepared baking sheets without overlapping.
06 -
Bake for 2 hours, turning slices halfway through, until golden brown and crispy.
07 -
Transfer slices to a wire rack to cool completely, allowing them to crisp further.
08 -
Serve immediately or store in an airtight container for up to one week.