Brush the zucchini lightly with canola oil and sprinkle both sides with adobe seasoning. Light a grill to medium heat and grill the vegetables until soft and charred in spots. Remove from heat, allow to cool and chop into bite-sized pieces.
Heat a little oil in a sauce pan set over medium-low heat. Add the black beans and 2 cups of water. Cover and bring to a gentle simmer. Cook for 10 minutes, stirring and mashing the beans a bit.
Turn off the heat, stir in the spinach and the roasted vegetables and season well with salt and pepper.
To serve, spread the spinach leaves on a serving plate. Heap the beans in the center. Stir the sour cream and chipotle together, and drizzle over the beans. Top with the cilantro and serve.