INGREDIENTS
10 Tablespoons
unsalted butter
2 smalls
yellow onions
2 cloves
garlic
2 tsp
fresh thyme leaves
1
bay leaf
1/4 cup
dry sherry
2 tsp
beef bouillon
2 tsp
worcestershire sauce
1 lb
pasta shells
4 cups
whole milk
1/2 cup
flour
2 cups
sharp cheddar cheese
3 cups
shredded mozzarella cheese