Preparation
Step 1
Mix the milk and flour in a small bowl or measuring cup then set aside.
Step 2
In a saucepan over medium heat, mix the chicken broth, mushrooms, garlic powder, onion powder, and salt and pepper. Bring the mixture to a low boil and let it cook for 2 to 3 minutes.
Step 3
Add the milk and flour mixture to the saucepan. Whisk everything together until it is smooth.