In a medium saucepan cook the pasta according to package directions.

Once the pasta is done cooking, transfer it to the strainer or a separate bowl

Add the saucepan back to the burner and melt the butter over medium heat.

Mix the flour in. When it's fully mixed it will have a paste-like texture. This will take at least 30 seconds.

Add the milk in slowly, Whisk it into the butter and flour mixture so that any lumps have been broken up. Stir continuously until the mixture begins to thicken and bubble. This can take anywhere from 3-5 minutes.

Remove the pan from the stove and add the cheddar cheese and stir until it's completely melted.

Add the pasta back into the pan and stir thoroughly until the cheese is fully coating the pasta. Enjoy!