Wash the broccoli and cut the florets into smaller pieces. Add them to a food processor and pulse a few times to create broccoli rice.

Add the oil to a pan and heat it over medium-low heat. Wait until the oil gets hot, then add Arborio rice and toast it by stirring frequently until lightly golden. Meanwhile, warm the water in the microwave.

Add 1 cup of water, salt, parsley flakes, dried thyme, and pepper to the rice. Stir constantly until the water evaporates.

Add another cup of water and continue stirring until it evaporates. Repeat this step with another cup of water.

Finally, add the broccoli rice, stir a few times, and add ½ cup of water. Stir constantly until the water evaporates. Taste it, and if the rice is not tender and creamy, add ½ cup of water, and continue cooking while constantly stirring. Adjust the salt and pepper in this step if necessary.

Remove from the heat, add finely grated cheddar cheese, and stir until melted and combined. Then add butter, and gently mix until fully incorporated.