Beef Tenderloin Medallions

Ingredients

• 1 lb beef tenderloin, trimmed
• 2 teaspoons coarse salt
• 2 teaspoons black pepper
• 2 teaspoons garlic powder
• 1/2 shallot
• 1 sprig fresh rosemary
• 3/4 cup beef broth, divided use
• 1/2 cup cabernet sauvignon wine
• 2 tablespoons unsalted butter
• 1 pinch salt, if needed
• 1 pinch pepper, if needed