Incredible Baked Cauliflower and Broccoli Cannelloni

Name: Incredible Baked Cauliflower and Broccoli Cannelloni
Ingredients: Sea salt; 1 pound broccoli, washed, florets and stalks chopped; 1 pound romanesco or white cauliflower, washed, florets and stalks chopped; Olive oil; 7 cloves garlic, peeled and finely sliced; 1 small bunch fresh thyme, leaves picked; 1 (1-ounce) can best-quality anchovies in oil, drained and chopped, oil reserved; 2 to 3 small dried chiles, crumbled; Freshly ground black pepper; 2 cups good-quality tomato sauce; Good-quality red wine vinegar; 2 cups creme fraiche; 7 ounces Parmesan, finely grated; 16 cannelloni tubes; 1 small bunch fresh basil, leaves picked; 7 ounces good-quality mozzarella cheese; Extra-virgin olive oil; 4 large handfuls arugula leaves, washed and dried; 1 lemon