1. Preheat oven to 350°.
2. To prepare filling, combine first 5 ingredients in a large bowl, tossing to coat. Pour mixture into an 11 x 7-inch glass or ceramic baking dish coated with cooking spray.
3. To prepare topping, weigh or lightly spoon flour into a dry measuring cup; level with a knife. Place flour, 1/4 cup granulated sugar, brown sugar, and salt in a food processor; process until combined. Add oats, gingersnaps, and butter; pulse 2 times or until crumbly.
4. Sprinkle topping over fruit mixture. Bake at 350° for 50 minutes or until filling is bubbly and topping is golden brown. Cool 10 minutes. Serve warm.