Cauliflower à la Niçoise

• 1 cauliflower
• 1 Spanish onion, finely chopped
• 2 cloves garlic, finely chopped

Prepare and cook cauliflower as in poached cauliflowerets recipe, for about 5 minutes. Sauté onion and garlic until transparent in olive oil and butter. Add diced peeled tomatoes or tinned tomatoes, and 2 tablespoons finely-chopped parsley. Season with salt and freshly-ground pepper. Add cooked caul