INGREDIENTS
1
flank steak
3/4 cup
soy sauce
1/4 cup
packed brown sugar
4 tbsp
balsamic vinegar
1/2 tsp
dry mustard powder
1/2 tsp
red pepper flakes
1/4 tsp
black pepper
salt
1 cup
unsalted butter, softened
1 cup
crumbled Gorgonzola cheese
3 cloves
garlic, minced
1/3
to 1/2 cup loosely packed fresh herbs, chopped
Salt and pepper,