Step 1: Preheat the oven to 425º F and line a baking sheet with baking paper. Cut the cauliflower into 1 ½ " slices.
Step 2: Brush with olive oil on both sides and season with salt and pepper.
Step 3: Place the slices on the tray and cover them with aluminum foil. Bake for 5 minutes.
Step 4: Remove the foil and roast for 10 minutes, turn them over and roast for 7 minutes more.
Step 5: While the cauliflower slices are baking, soak the cashews in water for 15 minutes.
Step 6: Drain and place them in a blender.
Step 7: Add the rest of the ingredients and blend until smooth.
Step 8: Serve the sauce with the cauliflower steaks and add fresh cilantro on top.