Start by preparing your peaches. If you’re using fresh peaches, slice them after peeling, ensuring they are ripe to achieve that perfect balance of sweetness and softness. If you opt for frozen peaches, make sure they are fully thawed first.

In a mixing bowl, combine the sliced peaches and the caster sugar. Stir gently until the sugar is evenly distributed among the peaches.

Add the lemon juice to the peach and sugar mixture, adjusting to taste.

Transfer the mixture into a baking dish, spreading it out evenly.

Preheat your oven to ensure the bars cook evenly.

Place the baking dish inside and allow it to bake until the edges appear lightly golden, and the centers are set.

Once the baking time is complete, remove the dessert bars from the oven and allow them to cool in the baking dish for a few moments before transferring to a wire rack.

After the bars have cooled, cut them into desired portions.

Serve these bars as they are or with a light sprinkle of powdered sugar. You could also pair them with a dollop of whipped cream or a scoop of vanilla ice cream.