1. Set the oven to 400 degrees Fahrenheit (205 degrees Celsius) and preheat it. Line a baking sheet or large roasting pan with aluminum foil; alternatively, you could lightly oil it.
2. In a bowl, place the cauliflower florets. Toss them with already minced garlic bits. Add a squeeze of lemon juice. Drizzle olive oil over the florets then tosses to coat them with the oil lightly.
3. On the roasting pan, arrange the florets in a single layer, season to taste with salt and pepper.
4. Roast the cauliflower for 25 to 30 minutes, uncovered, at 400°F (205°C), do this until the tops are gently browned. Check for doneness with a fork; when the cauliflower is done, the tines of the fork should easily pierce through them.
5. Take the cauliflower florets out of the oven, top them with a liberal amount of Parmesan cheese, and serve them right away.

If you’d like to see more ways to roast cauliflower florets in the oven, we recommend this video recipe for you to watch.