Step 1

- Melt butter in a saucepan over medium heat.

Step 2

- Now add flour to the melted butter and continue whisking until the mixture is well-blended and starts bubbling.

Step 3

- Next, add milk to the butter and flour mixture, and let it simmer for a while.

Step 4

- Continue whisking till the mixture starts thickening.

Step 5

- Once it reaches the consistency of a thick sauce, stop whisking.

Step 6

- Start adding the grated cheese to the mixture in small batches till it completely melts.

Step 7

- At this point, turn the flame low, and stir the mixture a bit to help the cheese melt into the mixture.

Step 8

- Once everything is completely blended, stir in the seasoning and flavoring. You can increase or decrease the amount depending on your taste and preference.

Step 9

And there you have it - The ultimate homemade nacho cheese sauce!