Slice the cauliflower into 1–2 central steaks. In a large pan, sear them in olive oil until golden. Add oregano, smoked paprika, salt, lemon juice, maple syrup, and water. Cover partially and cook for about 5 minutes, until tender and most liquid has evaporated.
Halve and deseed the peppers, brush with olive oil, and roast at maximum heat until soft and slightly charred. Blend with garlic, chili, paprika, lemon zest, vinegar, maple, olive oil, yogurt or almond milk, and salt until smooth.
Mix chopped cauliflower leaves with lemon juice, olive oil, salt, and green garlic if using. Taste and adjust.
Spread a layer of smoked pepper yogurt on the plate, place the cauliflower steak on top, add a spoonful of salsa, sprinkle with walnuts, and finish with a drizzle of olive oil.
