Heat your oven to 400 degrees f.
Line a large baking tray with parchment paper and place a cutting board on top.
Lay the cauliflower head and stem down, onto your cutting board. Slice the cauliflower lengthwise into ½-inch thick pieces. Halve the large cauliflower slices and trim if there's too much of the stem (The stem usually gets tough and chewy after roasting).
Slide the cauliflower pieces onto your prepared baking tray.
Sprinkle it with all the seasonings and drizzle on the oil.
Using your clean hands thoroughly combine to get all pieces evenly seasoned and oiled.
Arrange in a single layer into the tray so there's space to crisp up.
Roast for 30 minutes, flipping halfway.
Transfer your roasted cauliflower to a platter and top with raisins, cilantro, and freshly squeezed lime if desired.
Enjoy while hot!