To prepare a utokias cauliflower in bell pepper and cheese sauce recipe, first you need to prepare the cauliflower. First, you'll want to remove the stems from the stalks. Then, cut off the tops of the florets and cut them in half lengthwise. Now, slice the head of cauliflower into 1/4-inch-thick slices. You can use any type of cut-up cauliflower, as long as it's at least 1 inch (2.5 centimeters) long. If you don't have any, then you can cut it into 1-inch (1.3 cm) cubes, and put it in the microwave for 30 seconds to thaw.