This is how to make Mac'n'Cheese in one pot.
Step 1: Pot on Stove
Put a pot on the stove with medium heat.
Step 2: Pasta
Put in the pasta without water.
Step 3: Water
Add water little by little until the pasta is cooked. Pour out any excess water.
Step 4: Cheese
Add any type and amount of cheese you want and mix it with the pasta in the pot with the heat on medium high.
Step 5: Finish
This what it should look like at the end.