In a bowl, mix together ground beef, oregano, rosemary, salt, olive oil, onion and garlic. Form into four patties. Grill over a medium-high heat until medium-well, about 4-5 minutes per side.
Spread olive tapenade on bottom bun, top with patty, followed by tomato, cucumber and red onion. Season with salt and pepper.
Recipe by Cooking for Keeps at https://www.cookingforkeeps.com/greek-salad-burgers/