Preheat the oven to 450 degrees F.
Toss the cauliflower florets with 1 tablespoon of the grapeseed oil and some salt and pepper. Transfer to a baking sheet and roast until tender and browned, 5 minutes. Set aside.
Heat the remaining 1 tablespoon grapeseed oil in a pan. Add the shrimp and garlic. Then add the chile flakes, capers, chicken stock, parsley and lemon juice. Cook for 3 to 4 minutes to cook the shrimp and build the sauce. Remove from the heat and whisk in the butter to emulsify the sauce.
Add the cauliflower to the shrimp.
Recipe courtesy of Robert Irvine