Gather all ingredients. Preheat oven to 425F.
Toss cauliflower florets in half the oil and a pinch of salt & pepper to season. Place on a baking sheet and bake until golden brown, about 20-25 minutes. Check occasionally and turn about halfway through to ensure even cooking.
While cauliflower is baking, bring a large pot of water to a boil. Boil cheese Sacchetti per directions, about 3 minutes. Remove and set aside. Reserve about 1 cup of cooking liquid.
When cauliflower is cooked and golden brown, remove from oven and set aside.
In a deep sauté pan, heat the remaining oil on medium high heat. Add the capers and cook until crispy, about 3 minutes. Once crisp, remove with a slotted spoon and set aside on a paper towel lined plate.
In the same pan, reduce heat to medium and add the garlic, anchovies and crushed red pepper. Cook until garlic and golden and anchovies have broken down into the oil, about 1-2 minutes.
Fold in the pasta, roasted cauliflower, lemon zest, half the parsley, and ½ pasta water. Mix until evenly coated.
To plate, evenly divide mixture onto plates. Top with desired amount of cheese, and crispy capers. Enjoy!