For the glaze: In a saucepan, over medium heat, add olive oil, and heat, then add onion, garlic and Europe's Best Country Strawberries and cook, stirring occasionally for 5-6 minutes, or until strawberries are just softened. Add vinegar, honey, salt and pepper and cook for 2 minutes. Purée in blender or food processor.
For the Steak: In a small bowl, combine the mustard, garlic, pepper and salt. Rub over steak. Grill steak for 4-5 minutes pr side for medium-rare, or longer until desired doneness. Let stand for 5 minutes. Carve steak thinly, across the grain. Arrange on a serving platter. Spoon over sauce. Garnish with basil.
Boneless rib steaks can be substituted for sirloin steaks.