Sun-Dried Tomato Beef Burgers

From Cooking Light.

• Ready In: 20 mins
• Serves: 6
• Yields: 6 burgers

Ingredients

• 1⁄2 cup sun-dried tomato, packed without oil
• 1⁄4 cup  minced shallot
• 2  tablespoons Dijon mustard
• 1  tablespoon  balsamic vinegar
• 1  teaspoon paprika
• 1⁄2 teaspoon salt
• 1⁄2 teaspoon fresh ground black pepper
• 1 1⁄2 lbs  ground sirloin
• 1  garlic clove, minced
•  cooking spray
• 6 (2 ounce)  kaiser rolls, split
• 6  red onions, slices
• 6  romaine lettuce leaves

Directions

1. Place tomatoes in a bowl; cover with boiling water. Let stand 30 minutes or until soft. Drain and finely chop.
2. Prepare grill.
3. Combine tomatoes, shallots, and next 7 ingredients (through garlic). Divide mixture into 6 equal portions, shaping each into a 1/2-inch-thick patty.
4. Place patties on a grill rack coated with cooking spray; grill 5 minutes on each side or until a thermometer registers 160°. Remove from grill; let stand 5 minutes.
5. Place rolls, cut sides down, on grill rack; grill 1 minute or until toasted. Place 1 patty on bottom half of each roll; top each serving with 1 onion slice, 1 lettuce leaf, and top half of roll.