Preheat oven to 500 degrees. Remove the green leaves from head of cauliflower and trim the stems. Cut 1 1/2 inch thick steaks (I got 4 from two heads plus a bunch of florets which I saved for another use). Transfer slices to a baking sheet and brush olive oil on each side of each piece. Sprinkle spices on all steaks and then cover the baking sheet with aluminum foil.
Bake for 5 minutes, remove foil, and bake for an additional 10. Flip steaks and bake for another 5-10 minutes or until the tops are browned. Remove from heat and set aside.
Combine carrot tops, garlic, pecans, basil leaves, and asiago cheese in a high speed blender or food processor. Pulse until everything is chopped into small pieces. Turn the machine on and drizzle in 1/4 cup olive oil to incorporate. If the mixture is too dry, drizzle more olive oil until you reach your desired consistency.
Bring a medium saucepan of water to a boil over high heat. Salt and add in carrot pieces. Let blanch for 5 minutes. Meanwhile, add ice to a large mixing bowl and add water to create an ice bath. Once the carrots are ready, use tongs to transfer from the boiling water to ice bath.
Once carrots are cooled, transfer to a high speed blender along with miso, vinegar, yogurt, olive oil, and a dash of salt and pepper. Blend until completely combined and a thick dressing forms. You want the dressing to be thin enough that you can spread it but quick enough that it won't run. If it's too thick, add 1 Tbsp of water at a time until you've received a desired consistency.
Spread carrot miso dressing on a serving platters and place cauliflower steaks over it. Top with pesto, a drizzle of olive oil, salt, and pepper. Serve right away.