01 - Preheat oven to 350°F. Line an 8×8-inch baking pan with parchment paper, leaving an overhang on two sides for easy removal.
02 - In a large bowl, combine oats, almond flour, coconut sugar, sea salt, and cinnamon. Pour in melted coconut oil and maple syrup, stirring until the mixture becomes crumbly and evenly moistened. Set aside 1 cup for the topping.
03 - Transfer the remaining crumble mixture into the prepared pan and press firmly into an even, compact layer across the bottom.
04 - Toss the chopped strawberries with maple syrup, cornstarch, and lemon zest in a bowl until evenly coated. Spread the mixture in a uniform layer over the pressed base.
05 - Combine soaked cashews, lemon juice, maple syrup, vanilla extract, sea salt, water, and lemon zest in a high-speed blender. Blend until completely smooth and silky, adding more water a tablespoon at a time if needed to reach a spreadable consistency.
06 - Pour the lemon cashew cream over the strawberry layer and spread into an even surface using a spatula.
07 - Scatter the reserved crumble mixture evenly across the top of the cashew cream layer.
08 - Bake for 35 minutes, or until the topping is golden brown and the edges are gently bubbling.
09 - Let cool completely in the pan, then refrigerate for at least 1 hour before slicing into 12 squares for clean, neat edges.