Place a rack in the lower third of oven and preheat to 450 degrees. Line a baking sheet with aluminum foil and spray lightly with cooking spray.
Stir the melted butter, garlic powder, salt and pepper in a large mixing bowl then add the cauliflower florets. Toss until each floret is completely coated with butter and spices then set aside.
Mix Asiago cheese and breadcrumbs together in a separate bowl. Add 5 or 6 buttered florets into Parmesan/breadcrumb mixture and coat each one completely—try to obtain as much breading as possible on the cauliflower. Literally cake the breading onto the florets for the best flavor.
Arrange cauliflower on prepared baking sheet and repeat until all florets have been breaded. Space them on the baking sheet evenly but as far apart as possible.
Spritz top of cauliflower lightly with cooking spray then bake 16–18 minutes until golden brown on outside and cooked to desired tenderness inside. Remove from oven and cool slightly before serving. Enjoy!
Notes
If you don’t have Asiago cheese on hand, you can substitute with Parmesan.