Give me a 1 hour or preferably less, dessert recipe involving blueberries.

Blueberry Crisp

Ingredients:
- 4 cups fresh blueberries
- 1 cup rolled oats
- 1/2 cup all-purpose flour
- 1/2 cup brown sugar
- 1/4 cup granulated sugar
- 1/2 tsp cinnamon
- 1/4 tsp salt
- 1/2 cup unsalted butter, melted

Instructions:
1. Preheat the oven to 350°F (175°C) and grease a 9x9 inch baking dish.
2. In a large mixing bowl, gently toss together the blueberries and granulated sugar. Pour the blueberries into the prepared baking dish.
3. In a separate mixing bowl, combine the oats, flour, brown sugar, cinnamon, and salt. Stir well to combine.
4. Pour the melted butter over the oat mixture and stir until everything is well-coated and crumbly.
5. Sprinkle the oat mixture evenly over the blueberries in the baking dish.
6. Bake in the preheated oven for 30-35 minutes, or until the topping is golden brown and the berries are bubbling.
7. Allow the blueberry crisp to cool slightly before serving. Enjoy on its own or with a scoop of vanilla ice cream!