Preheat oven to 375.
Line an 8x8 or 9x12 baking dish with parchment paper (grease the inside of the pan first, so that the paper sticks).
In a medium bowl, add the strawberries, arrowroot flour, about half of the coconut sugar, and the cinnamon.
Transfer the strawberry mixture to the baking dish.
In the same bowl, mix together the almond flour, remaining coconut sugar, and baking powder.
Next, add the egg, melted coconut oil, and vanilla extract.
Whisk everything until fully incorporated.
Add chopped walnuts.
Use a spoon and scoop about two tablespoons of the dough at a time, and place on top of the strawberries.
Repeat until all of the dough is gone.
Bake for 40-45 minutes.
At the 25 minute mark, place foil on top to prevent too much browning!