Preheat your oven to 375°F and line a baking sheet with parchment paper or lightly grease it.
Toss the apple chunks with lemon juice in a large bowl to prevent browning.
In a small bowl, mix together the sugar and cinnamon until well combined.
Pour the melted butter over the apple chunks and toss until all pieces are coated.
Sprinkle the cinnamon-sugar mixture over the buttered apples and toss again until evenly coated.
Spread the apple bites in a single layer on the prepared baking sheet.
Bake for 12-15 minutes, stirring once halfway through, until the apples are tender and the coating is bubbly and caramelized.
Let cool for 5 minutes before serving warm, either on their own or with vanilla ice cream or whipped cream.