Preheat oven to 450 and line a pizza pan with parchment paper.In large bowl, rice (grate) the head of cauliflower with a grater or food processor.Microwave riced cauliflower for 5 minutes and let cool for at least 5 minutes.Once cooled, wrap cauliflower in a thin kitchen towel and wring moisture from cauliflower.Mix egg, ½ cup of cheese, 2 teaspoons of oregano and 2 teaspoons of dried basil with riced cauliflower.Pat cauliflower mix on lined pizza pan and place into oven for 25 minutes.Spoon tomato sauce, sprinkle ½ cup cheese, and add desired toppings. Place back into oven and cook for 5-8 minutes or until toppings have melted.