In a microwave-safe bowl, add the macaroni and water. Microwave on high for 8-10 minutes, stirring occasionally, until the macaroni is cooked and the water has been absorbed.
Once the macaroni is cooked, add the milk, shredded cheddar cheese, and butter to the bowl. Stir well to combine.
Microwave the mac and cheese on high for 1-2 minutes, or until the cheese is melted and the sauce is creamy. Stir the mixture every 30 seconds to ensure that the cheese is evenly melted.
Once the mac and cheese is heated through and the cheese is fully melted, add salt and pepper to taste.
Serve the mac and cheese hot and enjoy!
Notes
Microwave cooking time may vary depending on your microwave's wattage; stir frequently to prevent the pasta from drying out.
Add a splash of milk if the mac and cheese becomes too thick or dry.