INGREDIENTS
3 tbsp
– butter, unsalted
1 tbsp
– flour, all-purpose
1/2 cup
– chicken broth, low-sodium
1/2 cup
– milk
1/8 tsp
– salt
1/8 tsp
– black pepper, ground
1 tbsp
– flour, all-purpose
2 tbsp
chopped – onion
1 1/4
cup, pieces or slices – mushrooms, white