Preheat oven to 350ºF and grease two 8-inch round pans with coconut oil. (I like to line them with parchment paper, too, to guarantee easy removal later.)
In a blender or food processor, combine the dates and water and blend until smooth. (If using the food processor, I like to start with only 1/4 cup of the water because it can splash so much. Add the rest of the water after the dates have broken down more.)
Add in the eggs, almond butter, vanilla, baking soda, and salt and blend again until a smooth batter is formed.
Pour the batter into the two prepared pans, and smooth the top with a spatula. Bake until lightly golden, about 25 minutes.
Cool completely before removing the cake from the pan, then frost with your favorite frosting and serve. This cake can be served and stored at room temperature for at least 2 days, but for best shelf life I recommend storing it in the fridge, tightly covered, for up to a week.