1. Prepare the apple layer: Place the apples and raisins in a bowl. Place the dates, water, juice, orange zest, cinnamon, nutmeg, allspice, and sea salt in a blender and blend until creamy. Add to the apple mixture and mix well. Transfer to an 8 x 8-inch baking dish.
2. Prepare the crumble: Place all the ingredients in a food processor and pulse to chop until the walnuts are finely ground. Do not over process. Sprinkle on top of the apple layer.
Variations: Replace the apples with pears, peaches, or pineapple. Replace the walnuts with hazelnuts, pistachio nuts, or sunflower seeds. Replace the dates with dried figs or apricots.
Tips for What to Do With Excess ingredients: Besides just being eaten as is, leftover orange can be added to oatmeal, salads or juiced and added to salad dressing or smoothies. Dates can be chopped and added to oatmeal, salads or trail mix. They are also delicious stuffed with almond butter or coconut butter for a quick, energy dense snack.
Source: Mark Reinfeld