Place the lemon juice, honey and vanilla extract in a small bowl
Place all the dry ingredients needed for the crisp - oats, walnuts, almond flour, and salt - in a food processor or large bowl.
Place the strawberries in an 8x8 casserole baking dish and sprinkle with arrowroot flour.
Stir the honey mixture and pour it over the strawberries. Mix it the strawberries until they are well-coated with the arrowroot and liquid mixture, then set aside.
Add the coconut oil/butter and maple syrup to the crisp topping mixture and pulse several times with the food processor. If you're using a bowl instead, just give it a good stir. Both work well, I just like my topping a little finer.
Sprinkle the oat topping over the strawberry mixture.
Bake for 30-35 minutes, or until the topping is golden brown. Allow to cool for 10-15 minutes before serving.