How to Make It
Combine vinegar, 1/4 teaspoon salt, 1/4 teaspoon pepper, and one-third of garlic in a bowl. Add dill, tomato, and cucumber; toss to coat.
Combine remaining 1/2 teaspoon salt, remaining 1/2 teaspoon pepper, remaining garlic, onion powder, and beef in a bowl. Shape beef mixture into 4 patties. Heat a large skillet over medium-high heat. Coat with cooking spray. Add patties; cook 4 minutes on each side or until done. Remove from heat; top patties with cheese slices. Cover; let stand 1 minute or until cheese melts.
Add romaine and oil to tomato mixture; toss. Divide salad evenly among 4 plates; serve with patties.