Coffee-Marinated Beef Tenderloin Steaks

I made this last Sunday as an impromptu "candlelight supper". I didn't have a tenderloin so used some mid-quality bacon wrapped sirloin medallions from Costco. The previous ones from the pack had been tough so I moistened both sides of the steaks with white vinegar to help tenderize them and then marinated them for about 7 hours, turning every hour. I really liked the flavor and the steaks were much more tender this round! I served with steamed new potatoes (chicken broth, rosemary, bay leaf).

Coffee-Marinated Beef Tenderloin Steaks
Cooking Light: Fresh Food, Fast Weeknight Meals, Oxmoor House 2010

1 cup strong brewed coffee
1 1/2 tablespoons dark brown sugar
1/2 teaspoon salt
1/2 teaspoon pepper
1/4 teaspoon ground red pepper
2 garlic cloves, minced
4 (4-ounce) beef tenderloin steaks, trimmed (1/2 inch thick)
Cooking spray

1. Combine first 6 ingredients in a large zip-top plastic bag. Add steaks; seal bag. Marinate in refrigerator 8 hours, turning occasionally.
2. Prepare grill.
3. Remove steaks from marinade, discarding marinade. Place steaks on a grill rack coated with cooking spray. Grill 2 minutes on each side or until desired degrees of doneness.