We give your average hamburger a Mediterranean twist in this recipe with the flavors of Greece. You’ll combine ground beef with chopped baby spinach, green onion, feta cheese and oregano. While your hamburger patties cook, sauté diced zucchini in olive oil and season with lemon juice, lemon zest and salt and pepper. Skip the extra carbs from the bun and wrap your hamburger with two slices of butter head lettuce and top with juicy tomato slices. Serve up with a side of zucchini salad. Burger night just got better!