Grilled Mustard-Dill Burgers

Ingredients

• 2  boston lettuce leaves 
• 3 tablespoons dijon mustard 
• 1.5 tablespoons optional: dill fresh chopped
• 2  hawaiian rolls split
• 10 ounces ground beef lean
• 3 tablespoons cream sour
• 2 slices tomato 

Equipment

• bowl
• grill

Directions

1. Prepare barbecue (medium-high heat).
2. Mix first 3 ingredients in medium bowl.
3. Transfer 3 tablespoons sauce to small bowl and reserve.
4. Add meat to remaining sauce in medium bowl and mix gently. Divide meat mixture into 2 equal portions. Flatten each to 1/2-inch-thick patty; sprinkle with salt and pepper.
5. Grill cut side of buns until toasted, about 1 minute. Grill patties to desired doneness, about 4 minutes per side for medium.
6. Spread bottom half of buns with reserved sauce. Top each with burger, tomato slice, lettuce and bun top.