1. Preheat the oven to 350°F.
2. Place the crust ingredients in the bowl fitted with the kneading/crushing blade. Mix at speed 8 for 1 minute. Pat into the bottom of a 9-inch square baking pan. Bake for 10 minutes. Wash the Prep&Cook bowl.
3. Place the custard ingredients in the bowl fitted with the whisk. Mix at speed 4 for 1 minute. Pour over the hot crust.
4. Bake for another 20 minutes or until filling is just set. Cool completely. Just before seving, dust with powdered sugar.