Preheat the oven to 350 degrees F. Lightly grease an 8-10 inch cast iron skillet or glass baking dish.

To the baking dish, add the peaches, butter, brown sugar and vanilla. Gently toss to combine, it does not need to be perfect.

To make the topping, combine the oats, flour, brown sugar, cinnamon and salt in a medium size mixing bowl. Add the butter and use your hands to work the butter into the dry ingredients until everything is moist and clumps together. Sprinkle the topping over the peaches.

Place the dish on a cookie sheet to catch drips and place in the oven. Bake for 40-45 minutes or until the top is golden and the peaches have created a caramel like sauce that is bubbling. Remove from the oven and let cool slightly. Serve warm or at room temp with a big scoop of vanilla ice cream!