Toss the cauliflower with 2 tablespoons of the olive oil and a few grinds of salt and pepper; spread on a rimmed baking sheet. Broil, stirring occasionally, until lightly charred and tender, about 10 minutes. (Keep a close eye, so it doesn’t burn.).
Heat the remaining tablespoon of oil in a large nonstick skillet over medium-high. Add in the turkey sausage and cook, without turning, for 1 minute. Then stir, sautéing for another 2 minutes. Add the snow peas, bell pepper, and ginger to the skillet. Cook, stirring occasionally, until crisp tender, 1-2 minutes. Toss in the scallions, cashews, and cooked cauliflower.
Stir in the chili sauce and soy sauce, toss to thoroughly coat.
Serve over hot cooked rice with a sprinkle of freshly chopped cilantro or parsley.