To make the crust:
Combine the salt and flour. Cut in the shortening with a knife or pastry cutter until the pieces are the size of peas. Add the water slowly (you may not need it all) until the dough just comes together.
Form into a ball and refrigerate for 30 minutes. Roll out dough and place in the bottom of a 9 inch tart pan with a removable bottom. You can also use a pie pan if you wish.
To make the crumble topping:
Calories: 359kcal, Carbohydrates: 56g, Protein: 4g, Fat: 15g, Saturated Fat: 8g, Cholesterol: 33mg, Sodium: 120mg, Potassium: 146mg, Fiber: 4g, Sugar: 35g, Vitamin A: 413IU, Vitamin C: 5mg, Calcium: 26mg, Iron: 1mg