3 tablespoons sour cream
3 tablespoons Dijon mustard
1 1/2 tablespoons chopped fresh dill
10 ounces lean ground beef
2 hamburger buns, split
2 tomato slices
2 Bibb lettuce leaves
Prepare barbecue (medium-high heat). Mix first 3 ingredients in medium bowl.
Transfer 3 tablespoons sauce to small bowl and reserve.
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.
Grill cut side of buns until toasted, about 1 minute.
Grill patties to desired doneness, about 4 minutes per side for medium.
Spread bottom half of buns with reserved sauce.
Top each with burger, tomato slice, lettuce and bun top.
Serves 2; can be doubled.