Ingredients

• 1/4 cup olive oil
  
• 4 teaspoons tarragon vinegar
  
• 2 teaspoons Dijon-style mustard
  
• 1/2 teaspoon dried tarragon, crushed
  
• 1/4 teaspoon salt
  
• 1 pound boneless beef sirloin steak, cut 1-inch thick
  
• 1 cup cauliflower flowerets
  
• 1 cup broccoli flowerets
  
• 1 small red sweet pepper, cut into 1-inch pieces (3/4 cup)
  
• 1 small yellow sweet pepper, cut into 1-inch pieces (3/4 cup)
  
• 1 small red onion, halved and finely sliced (1/2 cup)
  
• 2 slices bacon, crisp-cooked, drained and crumbled
  
• 4 cups torn lettuce
  
• 1/4 cup finely shredded Parmesan cheese