Fill a pot with water and bring to a boil. Add the pasta elbows and cook per package instructions.
Step: 2
While the pasta cooks, make your macaroni and cheese sauce. Add the butter to a saucepan and melt it. Add the flour and whisk constantly, until it's just starting to turn light golden brown, this should take about 4 minutes.
Step: 3
Slowly whisk in the warm milk, whisk constantly until it comes together as a sauce. Add the paprika and season with salt and pepper. Bring to a simmer and continue whisking constantly until flour is completely incorporated. This should take about 4 minutes.
Step: 4
Add the shredded cheddar and gruyere and whisk until the cheese is completely melted.