Creating the perfect Nectarine Raspberry Crisp is easy when you follow these simple steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C).
2. Prepare Fruit: In a large bowl, combine sliced nectarines and raspberries. Add granulated sugar and lemon juice, then gently toss to coat the fruit evenly.
3. Transfer Fruit: Pour the fruit mixture into a greased 9×13-inch baking dish, spreading it out evenly.
4. Make Topping: In another bowl, mix together rolled oats, flour, brown sugar, cinnamon, and a pinch of salt. Stir in melted butter until the mixture is crumbly.
5. Top the Fruit: Evenly sprinkle the oat topping over the fruit mixture in the baking dish.
6. Bake: Place the baking dish in the preheated oven and bake for 30-35 minutes, or until the topping is golden brown and the fruit is bubbly.
7. Cool: Remove from the oven and let the crisp cool for about 10 minutes before serving.

By following these straightforward steps, you will have a delicious Nectarine Raspberry Crisp ready to impress your guests!