Place a rack in the center of your oven and preheat to 350°F. Make the topping: stir the flour, brown sugar, granulated sugar, salt, cinnamon, and cardamom together in a medium bowl. Pour the butter of the top, then stir until the crumble is evenly moistened. Squeeze together with your fingers to form some clumps. Place in the refrigerator while you prepare the filling.
Wash, stem, and quarter the strawberries, then place them in a large mixing bowl. Add the cornstarch, honey, lemon juice, and vanilla. Stir to combine. Transfer to a 9×9-inch baking dish (or a deep 9-inch pie dish or a ~8x10-inch casserole dish), including any juices that collect in the bottom of the bowl.
Break the crumble over the top, leaving some nice chunky pieces. Place the dish on a parchment-lined baking sheet to catch any drips. Bake until the filling is hot and bubbly and the topping is golden, 40 to 45 minutes. Remove from the oven and let (the filling will set up). Enjoy warm with a big scoop of vanilla ice cream.
Notes
TO STORE: Cover the crumble in the dish with plastic wrap or transfer leftovers to an airtight container. Store in the refrigerator for up to 3 days.
TO REHEAT: Warm individual portions in the microwave, or heat up the whole crumble in a 350ºF oven until it’s warmed through.
TO FREEZE: Freeze the crumble wrapped well in the baking dish or in an airtight container. Thaw in the refrigerator before reheating.