1 Toast Crumbs In A Little Olive Oil In A Skillet On Medium High Heat Until Lightly Browned. Remove Crumbs From Skillet And Set Aside. 2 Heat 2 Tbsp Olive Oil In The Skillet On Medium Low Heat. Add The Onions, Garlic, And Anchovies. Crush The Anchovies With The Back Of A Spoon So That They Smear Well Over The Onions. Cook For 5 Minutes, Until The Onions Are Soft. Remove From Heat. While You Are Cooking The Onions, Put A Large Pot Of Salted Water (1 Tbsp Salt For 2 Quarts Of Water) For The Pasta On The Stove To Boil. 3 Heat 4 Tbsp Olive Oil In A Large Skillet On Medium High Heat. Add The Cauliflower, Stir Infrequently, Allowing The Cauliflower Edges To Brown. Cook Until The Cauliflower Florets Are Lightly Browned, 3-5 Minutes. Add Red Pepper Flakes To The Pan, And Salt And Pepper To Taste. Dissolve Tomato Paste In 1/2 Cup Of Water. Lower The Heat To Low. Add The Tomato Paste, Tomatoes, Onion, Garlic, And Anchovies, Stir To Combine Well. Cook, Uncovered, On Low Heat, Until The Cauliflower Is Tender. 4 Cook The Pasta, Uncovered, In Salted Boiling Water Until Just Al Dente, According To The Pasta Package'S Cooking Directions. Drain The Pasta From The Cooking Water And Add The Cooked Pasta To The Cauliflower Mixture. Stir In About Half Of The Parsley, Breadcrumbs, And Parmesan (Leave The Rest For Garnish On Top).