How to Make It
Preheat the oven to 420° and set the oven rack to the highest setting. Line a baking sheet with parchment paper.
Cut cauliflower into bite-sized pieces, toss with the extra-virgin olive oil and spread on a sheet tray. Roast in the oven for 20-30 minutes, or until soft and very brown in spots, turning half way through.
While the cauliflower is roasting, prepare the walnuts. Line a plate with a piece of parchment paper. Add the walnuts, sugar, salt and pepper to a small frying pan over high heat and stir well. Cook until the nuts have caramelized and all the liquid has evaporated, shaking the pan occasionally, about 4 minutes. Transfer the walnuts to the plate, making sure they are in a single layer.
Add the quinoa to a small frying pan over medium high heat. When the quinoa begins to pop, shake the pan occasionally and continue to cook for about 2 more minutes, or until the quinoa is fragrant and light brown. Remove from the heat.
To serve, place the roasted cauliflower on a serving platter and top with candied walnuts and toasted quinoa.