Preheat your oven to 350°F (175°C). This is an important first step, as a hot oven is essential for achieving that golden-brown topping.
Grease an 8×8 inch baking dish. This will help prevent sticking and ensure that each slice of your Apple Crisp comes out beautifully.
In a large bowl, mix the sliced apples with granulated sugar and cinnamon until well coated. You want every piece of fruit to be sweetened and spiced.
Transfer the coated apples to the prepared baking dish, spreading them evenly. This ensures even cooking and flavor distribution.
In another bowl, combine oats, flour, brown sugar, and salt. Mix these dry ingredients well to ensure the flavors are evenly distributed.
Add the cubed butter to the dry mixture. Using a pastry cutter or your fingers, blend until the mixture resembles coarse crumbs. This step is crucial for achieving that crispy topping.
Evenly sprinkle the oat mixture over the apples in the baking dish. Make sure to cover the apples completely for a deliciously crunchy topping.
Bake in the preheated oven for 45 minutes. Keep an eye on it; the top should be golden brown, and the apples should be bubbly.
Once baked, let the Apple Crisp cool slightly before serving. It’s perfect warm, especially with a scoop of optional vanilla ice cream.