The iconic Delia Smith has over 1400 recipes online categorised under Main Ingredient, Type of Dish, Seasons, International, Collections, Meals and Courses, Cakes and Occasions, with many sub-categories to help you browse.
The search facility is a straight forward search across the categories with no filtering option, but the tabs above do show the number of recipes from the results in their relevant category. So a search for "cauliflower" gave 8 recipes, and they come from categories such as 'Collections...Family suppers without meat' and 'Meals and Courses...Lunch and Snacks'.
There's also a handy Learn to Cook with sections on How to Cook a range of dishes, ingredients, and Cookery School videos.