Step 1

Melt the butter in a large pot

Step 2

Add the flour and whisk to combine.

Step 3

Once the butter starts to get brown and has a nutty flavor whisk in the milk. Make sure you've got no clumps. Let it simmer for 1-2 minutes while constantly stirring.

Step 4

Add all the spices and the mustard. Stir everything to combine. Let it cook until it starts to simmer (about 5-8 minutes).

Step 5

Remove the pot from the heat and add the cheese. Stir until it's completely melted.

Step 6

Next add the spinach and the food coloring. Mix and keep adding green food color until you get the desired green.

Step 7

Cook the pasta and add it to the cheese mixture.

Step 8

If the cheese sauce is to thick add some of the pasta water.

Step 9

Stir everything well and serve