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["Place a rack in middle of oven and preheat to 325u00b0F. Pulse gingersnaps in a food processor until very fine crumbs form (you should have about 2 cups). Add flour, raw sugar, and salt and pulse to combine. Add butter and pulse until mixture is the consistency of wet sand.", "Transfer mixture to a 9"" pie dish. Using a measuring cup, press firmly onto bottom and up sides of pie dish. Place pie dish on a rimmed baking sheet and bake crust, rotating halfway through, until dry and set, 20-25 minutes. Transfer pie dish to a wire rack and let crust cool.", "DO AHEAD:", "Place gelatin and 2 tablespoons milk in a small bowl and let stand until gelatin is softened, 5-10 minutes.", "Warm remaining 1/2 cup milk in a small saucepan over medium heat until steaming, about 3 minutes. Remove from heat, add gelatin mixture, and whisk until smooth. Whisk in yogurt, brown sugar, and lemon zest and pour into pie crust, smoothing top if needed; chill until set, at least 2 hours.", "Meanwhile, bring grapes, granulated sugar, lemon juice, pepper, and salt to a boil in a large skillet over medium-high heat, stirring to dissolve sugar. Reduce heat and simmer, stirring occasionally, until grapes burst and mixture is syrupy, 8-10 minutes. Let cool.", "Using a slotted spoon, spoon compote over pie slices just before serving.", "DO AHEAD:"]
