process 1 cup of the oats into a flour in a food processor or blender. Transfer to a bowl.
Add the remaining 1 cup oats, brown sugar, cinnamon, and salt, and stir until combined.
Drizzle the butter and vanilla over the oat mixture and stir to combine.
Scatter crisp topping evenly over the fruit mixture.
Bake the crisp until the fruit is bubbling and the top is golden brown and firm, 30-35 minutes.
Remove from oven and let cool a bit before serving with ice cream. Enjoy!