Preheat your oven to 400 degrees f. and line a large baking sheet with parchment paper.
In a large bowl combine the tomato puree, melted butter, and spices. Whisk together really well using a fork.
Dredge or dip your cauliflower slices into this sauce mixture and gently push and firmly press each piece to coat really well with the sauce mixture.
Transfer your coated cauliflower pieces to your prepared pan.
Sprinkle with Parmesan cheese.
Bake for 30 - 35 minutes, or until cauliflower is tender-crisp.
Enjoy!