Boil the vegetable broth to a boil in a large pan.

In a bowl, whisk together the milk and the flour until the flour is dissolved.

Add in the remaining ingredients and continue whisking it until it is incorporated.

Add the milk/flour mixture to the broth, whisking it to combine.

Reduce heat to medium, allow to cook until thickened (3-5 minutes) stirring constantly.

Remove from heat.

Use immediately or store in airtight container in refrigerator.