Preheat the oven to 350 degrees F and line a small 8.5" x 6.5" baking sheet with parchment paper. Note: You can also use an 8-inch or 9-inch square pan or round cake pan.
Add all ingredients for the cake to a blender and blend until completely combined. Pour the cake batter onto the prepared baking sheet and use a rubber spatula to spread it into an even layer.
Bake on the center rack of the oven for 25 to 28 minutes, or until cake tests clean.
Remove from oven and allow cake to sit at least 5 minutes before cutting into squares and serving.
Serve with fresh berries and a dollop of whipped coconut cream
Notes
*You can use any liquid sweetener you'd like, including honey, agave, and coconut palm syrup. To keep this recipe low-FODMAP, avoid using honey.