Preheat the oven: Begin by preheating your oven to 425°F (220°C). A hot oven is essential for achieving that perfectly roasted texture.
Prepare the sauce: In a mixing bowl, combine 3 tablespoons of olive oil, 2 tablespoons of maple syrup, 2 tablespoons of sriracha sauce, 1 teaspoon of garlic powder, 1 teaspoon of salt, and 1/2 teaspoon of black pepper. Whisk the ingredients together until well combined, forming a smooth sauce.
Toss the cauliflower: Add the 1 medium cauliflower, cut into florets, to the bowl with the sauce. Toss everything together until the florets are evenly coated.
Prepare the baking sheet: Line a large baking sheet with parchment paper to prevent sticking and facilitate cleaning. Spread the coated cauliflower florets evenly across the sheet. Make sure they are not overcrowded, as this will allow them to roast properly.
Roast the cauliflower: Place the baking sheet in the preheated oven. Roast for 25-30 minutes, stirring halfway through. You want the cauliflower to be tender and slightly charred when finished.
Garnish and serve: Once roasted, remove the cauliflower from the oven and let it cool for a few minutes. Just before serving, you can garnish it with chopped green onions and sesame seeds, adding color and texture to the dish.