INGREDIENTS
1/2 tsp
black pepper
3 tbsp
butter
3 tbsp
flour
2 tsp
fresh thyme leaves
4 larges
garlic cloves
1 tsp
kosher salt
2 cups
low fat milk
1/2 cup
parmesan cheese
1 1/2 cups
sharp cheddar cheese
1 cup
vegetable stock
1 small
yellow onion
4 lb
yukon gold potatoes