Preheat your oven to 425 degrees f. and line a large baking sheet with parchment paper.
Lay the cauliflower florets onto the prepared baking tray. Drizzle with the oil and sprinkle with the parmesan and a generous pinch of sea salt and pepper.
Toss well to coat. Spread the florets evenly in a single layer with a bit of space in between so they can crisp up.
Roast for 20-22 minutes or until golden and tender-crisp.
Meanwhile, make your lemony sauce.
In a saucepan, add the broth, lemon zest, lemon juice, honey, garlic, and gluten free flour.
Whisk constantly while on medium heat until bubbly and thickened a bit, about 3-4 minutes.
Remove from heat.
Pour your lemony sauce over the roasted cauliflower and toss to coat.
Garnish with fresh parsley and serve immediately.
Enjoy!