Cheesy Baked Mustard Chicken

INGREDIENTS

boneless, skinless chicken breasts

1 1/2 cups

sharp cheddar cheese, grated

3/4 cup

whole milk

1/2 cup

parmesan cheese, grated

3 tbsp

unsalted butter

2 tbsp

all-purpose flour

1 1/2 tbsp

whole grain mustard

1/2 tsp

garlic powder

kosher salt and freshly ground pepper,

Taste and adjust seasoning, if necessary.