Preheat your oven to 350°F (175°C).
In a large bowl, combine sliced peaches, sugar, and cinnamon.
Transfer the peach mixture to a greased baking dish.
In another bowl, mix oats, flour, brown sugar, and salt.
Add softened butter to the oat mixture and crumble together.
Spread the crumble evenly over the peach mixture.
Bake in the preheated oven for 30 minutes or until golden brown.
Remove from the oven and let cool slightly.
Serve warm, optionally with ice cream.
Enjoy your delicious peach crisp!