Preheat oven to 375°F. Lightly grease an 8×8-inch baking dish.

Add the sliced apples to the baking dish and sprinkle with half of the cinnamon.

In a bowl, combine the walnuts, oats, flour, brown sugar, remaining cinnamon, and salt.

Stir the melted butter and vanilla into the walnut mixture until crumbly.

Sprinkle the walnut topping evenly over the apples.

Bake for 30–35 minutes, until the apples are tender and the topping is golden brown and crisp.

Let cool for 5–10 minutes before serving. Enjoy!

Serving Suggestions:

• Vanilla ice cream
• Whipped cream
• Greek yogurt
• Caramel drizzle