Sautéed Cauliflower & Grape Tomatoes

Cook pancetta in a large nonstick skillet over medium heat until it begins to brown, 3 to 5 minutes. Using a slotted spoon, transfer the pancetta to a paper towel-lined plate to drain. Add 1 tablespoon oil to the pan. Add cauliflower, cover and cook, stirring occasionally, for 4 minutes. Add water and vinegar, cover and cook, stirring occasionally, until golden brown and tender and the liquid has evaporated, about 4 minutes more. Add the remaining 1 tablespoon oil, tomatoes, parsley, garlic, anchovies (if using), salt and pepper. Cook, stirring, until the garlic is soft, about 2 minutes more. Serve the sautéed cauliflower with the crispy pancetta on top.