Stage 1: Prepare the Aromatic Foundation : In a medium bowl, whisk together the fresh lemon juice, lemon zest, granulated garlic powder, and black pepper. This step creates a concentrated flavor base that will evenly season the entire mash without excess salt.
Stage 2: Construct the Fortified Mash : Add the rinsed cannellini beans to the bowl with the lemon mixture. Using the back of a fork, mash the beans against the side of the bowl until they form a coarse, creamy paste. This texture is key to seamlessly integrating them.
Stage 3: Incorporate the Avocado : Scoop the flesh of the two avocados into the bowl with the mashed beans. Using the fork, gently mash and fold the avocado into the bean paste until just combined. Aim for a rustic, chunky texture rather than a perfectly smooth purée.
Stage 4: Toast the Grain Base : While the mash rests, toast the 4 slices of high-fiber, seeded whole-grain bread to your desired level of crispness. A sturdy, well-toasted base is essential to support the generous topping.
Stage 5: Assemble the Toasts : Once the bread is toasted, immediately divide the fortified avocado mash evenly among the four slices, spreading it from crust to crust.
Stage 6: Garnish and Finish : Drizzle each toast with ½ teaspoon of high-quality extra-virgin olive oil. Sprinkle evenly with the Dukkah for a savory, nutty crunch. If desired, finish with a light scattering of fresh parsley for color and serve immediately.