Preheat your oven to 350°F (175°C).
In a large bowl, combine sliced peaches, granulated sugar, vanilla extract, and lemon juice.
Pour the peach mixture into a greased baking dish.
In another bowl, mix together flour, oats, brown sugar, cinnamon, and salt.
Stir in melted butter until the mixture resembles coarse crumbs.
Sprinkle the crumble mixture evenly over the peaches.
Bake in the preheated oven for 30-35 minutes or until the topping is golden brown.
Remove from the oven and let it cool slightly.
Serve warm, preferably with a scoop of vanilla ice cream.
Enjoy your delicious peach crisp!