Preheat your oven to 400°F (200°C).
If using fresh cauliflower, cut it into florets and pulse in a food processor until it resembles rice grains. If using frozen riced cauliflower, thaw and drain excess moisture.
In a large mixing bowl, combine the riced cauliflower with olive oil, chopped garlic, and kosher salt. Toss until evenly coated.
Spread the mixture evenly on a baking sheet lined with parchment paper. Roast for about 20-25 minutes, stirring halfway through, until lightly golden and tender.
Once roasted, transfer the cauliflower rice back to the mixing bowl. Add fresh chopped parsley and lemon juice. Toss well to combine.
Serve and enjoy your Roasted Cauliflower Rice!